Soil chemistry 8 Education 7 History 6 Dairy Science 5 Food supply 5 Medicinal plants 5 Motion pictures 5 Philosophy 5 Statistics 5 Arts 4 Biography 4 Fiction 4 Fisheries-- Fishing 4 Mathematical physics 4 Medicinal plants- Encyclopaedias 4 Plants 4 Social Science 4 medicinal plants 4 Astronomy 3 Biodiversity 3 Ethnology 3 Marriage 3 Mechanics 3 PROTECTING THE CULTURE HERITAGE-- NATIONAL LEGISLATIONS AND INTERNATIONAL CONVENTIONS 3 Quantum mechanics; Physics 3 Social Sciences 3 Social conditions 3 Soil conditioners 3 Tribes 3 Viruses 3