Topics: Soil, rock weathering, soil formation, soil profile, soil classification, soil taxonomy, entisols, inceptisols, andisols, gelisols, histosols, Soil Architecture, soil color, soil texture, soil textural classes, mineral soils structure, tillage, soil density, soil water, soil water energy, soil water content, soil water potential, infiltration, percolation, water vapor movement, hydrologic cycle, soil-plant-atmosphere continuum, enhancing soil drainage, septic tank drain fields, soil aeration, redox potential, wetlands, soil temperature control, soil colloids, layer silicate clay structure, cation exchange capacity, soil acidity, soil ecology, soil organism, earthworms, ants, termites, soil algae, soil fungi, soil prokaryotes, soil organic, soil organic matter management, climate change, soil phosphorus, sulfur oxidation, sulfur retention, soil fertility maintenance, phosphorus cycle, ammonia volatilization, ammonia fixation, sulfur cycle, calcium, magnesium, silicon, trace elements, Practical Nutrient Management, chemical pollution, Geographic Soils Information

Topics: Arabic Literature, Pre-Islamic Poetry, Pre-Islamic Poetry Themes, Pre-Islamic Poetry Style, Al-Mualaqaat, Pre-Islamic Prose, Early Islamic Period poetry, Al-Mukhađramūn, Prophet Muhammad orations, Islam impact on Arabic Literature, Arabic Pronunciation, Arabic language, Adab, Arabic literary history, Pre-Islamic Arabic literature scope

Topics: Metaphysical Philosophy, moral philosophy, Logical Relativism, Skepticism, Absolutism Mahavira, Early Rational Synthesis, Atomism Democritus, Hierarchical Idealism, Plotinus, Developed Skepticism, Sextus Empiricus, Religio-Philosophical Synthesis, Methodological Metaphysics, Immanent-Transcendent Holism, Spinoza, Fideistic Neo-Skepticism, Perceptual Analysis

Topics: Black diaspora literature, African American Literature, African American Literature themes, African American Literature characteristics, oral tradition, Early African American Literature, Post-slavery Era, Harlem Renaissance, Civil Rights Movement, Black Art, Black Power Era, Female, Feminist Writings, Twenty-first Century African American Literature

Topics: Natural Environment, Animal Production, earth science, environment, geological activity, oceans, rivers, streams, lakes, ponds, climate change, atmosphere, atmospheric layers, global warming, climate, weather, life ecosystems, biomes, biogeochemical cycles, wilderness, Environmental degradation, population growth, agriculture, water management, greenhouse gas emission, Gas effect, emissions, pollution, air pollution, water pollution, land pollution, erosion, coastal erosion, glaciers, floods, freezing, thawing, wind erosion, gravitational erosion, exfoliation, soil structure, soil composition, vegetation cover, topography, agricultural practices, deforestation, urbanization, airborne dust pollution, desertification, Stratospheric Ozone, ozone hole, Antarctica Ozone Theory

Topics: Soil Conservation, Water Conservation, erosion, Soil Erosion and Civilization, Geologic Erosion, Sedimentation, Landscape Development, rock types, Sedimentary Landforms, Mass Movement Deposits, Glacial Landscapes, Water Erosion, erosion damage, Vegetation, Soil Properties, Soil Erodibility, pollution, Water-Erosion Control, Wind Erosion, wind erosion process, Windbreaks, Shelterbelts, Wind-Erosion Control, Predicting Soil Loss, Tolerable Soil Loss, Universal Soil Loss Equation, Computer-Based Soil Loss Prediction Models, Wind-Erosion Prediction Equation, Wind Erosion Prediction System, Soil Map Unit Interpretations, soil survey, Land Use Planning, managing land, cropping systems, Managing Monocultures, crop rotations, Multiple Cropping, Evaluating Cropping Systems, strip cropping, tillage, Conservation Tillage, deep tillage, Contour Cultivation, Emergency Wind-Erosion Control, Gully-Control Structures, road ditches, culverts, Earthen Dams, Streambank Protection, flood control, Wind Erosion-Control Structures, Pastureland Management, Rangeland Management, Forestland Management, water cycle, drought, Soil Drainage, wetlands, Irrigation, Irrigation Methods, Land Reclamation, Conservation Irrigation, soil pollution, pollutants, industrial wastes, agricultural wastes, aerosols, polluted soil, Hazardous Sites, Soil Remediation, Water Quality, water Pollution, Water acidification, Farm Service Agency

Topics: Church History, Ancient church history, Birth of Christian Church, Church persecutions, New testament Canon formation, church fathers, growth of liturgy, Reconciliatory Councils, Creedal Development, Monasticism, End of Western Roman Empire, Medieval Church, Holy Roman empire, crusades, reformation, Birth of Jesus Christ, Ministry of Jesus Christ, Death of Jesus Christ, Burial of Jesus Christ, Resurrection of Jesus Christ, Ascension of Jesus Christ, Tenets of Christ's Teachings, Pentecost, Gospel Testimony, Fall of Jerusalem, Doctrinal System, Institution of the Church, Stephen's Death and Saul's Involvement, Saul's Conversion, Church at Antioch, Jerusalem Council, Second Missionary Journey of Paul, Paul's Third Missionary Journey, Paul's Fourth Missionary Journey, Emperor Nero's Persecution, Edict of Emperor Constantine, Emperor Trayan persecution, Emperor Marcus Aurelous persecution, New Testament, New Testament origin, New Testament contents, Muratorian Fragment, Gnostics, Ebionites, Manichaeans, Montanists, Early Christian Church, Belief, John Chrysostom, Eusebius, Western Post Nicene Fathers, Ambrose, Jerome, Augustine, Liturgy development, Arian Controversy, Nature of the Holy Spirit, Apollinarian Controversy, Pelagian Controversy, Asceticism, Roman Church orthodoxy, Burgundians

Topics: Islamic Political Institutions, Jāhiliyyah Period, Early Life of Prophet Muhammad, Marriage to Khadījah, Advent of Islam, Migration to Madinah, Foundation of the Islamic State, Conquest of Makkah, Institution of the Caliphate, Khulafā’al-Rāshidūn, Rightly Guided Caliphs, Umayyads, the Abbasids, Aglabids, Fatimids, Ottoman Turks, Sokoto Caliphate, Vizier, Qādī, Muhtasib, Wāli Mazālim, Şāhibu ‘s-Shurţah, Sokoto Jihad Leaders, Sokoto Jihad Scholars, Nigerian Muslim Scholars

Topics: Arabic Rhetoric, Early Arabic Rhetoricians, Al-Balāgha Evolution, al- Isti‘ārah, al-Majāz, al-Kināyah, Arabic Lexical embellishments

Topics: Gospel of Matthew, Matthew’s Gospel, Matthew’s Gospel authorship, Mathew's Circumstances of Writing, Matthew’s Gospel life-setting, Matthew’s Gospel purpose, Matthew’s Place among the Gospels, Matthean Jesus, Historical Jesus, Jesus as Magician, Jesus Deceiver, Mission of Jesus, Matthew’s Universal Relevance, Theology of Matthew, Matthew’s Missionary focus, Relevance of Matthew’s Gospel to Africa, Early Church’s Tradition about Matthew’s Date