Soil types 7 Specific types of data files and databases-Dbase 6 Forests and Forest Trees (Biology and Ecology) 5 Library and Society-- Information Source-- Information Service-- Information System-- Organization of Knowledge-- Types of Libraries-- RRRLF-- UGC-- Bibliomet 5 Biodiversity 4 Biological Resources (Plant) 4 Forests 4 Grasslands and Rangelands 4 Plant Ecology 4 Soil Biology 4 Soil Chemistry and Mineralogy 4 Soil Fertility 4 Soil fertility 4 Animal Ecology 3 Biomass 3 Cole crops 3 Erosion 3 Erosion: Soil and Water Conservation 3 Grasslands 3 ISSN-- OPAC-- METADATA-- NISSAT-- INSDOC-- Type of Libraries 3 Irrigation 3 Meteorology and Climate 3 Objective Type Questions 3 Plants 3 Pollution and Degradation 3 Soil management 3 Sustainability 3 Trees 3 Vegetation types 3 Woody plants 3