S - Agriculture 2,053

United States National Park Service 27 Garden History Society (Great Britain) 17 Cornell Cooperative Extension 11 American Society for Horticultural Science 10 American Society of Landscape Architects 10 Philadelphia Society for Promoting Agriculture Collection (University of Pennsylvania) 10 National Conference on State Parks 9 Pennsylvania Horticultural Society 9 Royal Horticultural Society (Great Britain) 9 United States Bureau of Plant Industry 9 United States Plant Pest Control Division 9 Landscape Design Trust 8 National Parks Association (U.S.) 8 New York Botanical Garden 8 New York State Agricultural Experiment Station 8 Park Practice Program (U.S.) 8 United States Agricultural Research Service 8 United States Animal and Plant Health Inspection Service. Plant Protection and Quarantine Programs 8 United States Bureau of Entomology and Plant Quarantine 8 Vsesoi︠u︡znyĭ institut zashchity rasteniĭ (Soviet Union) 8 American Phytopathological Society 7 Entomological Society of America 7 International Rice Research Institute 7 International Union for Conservation of Nature and Natural Resources 7 National Recreation and Park Association 7 Southwest Missouri State University State Fruit Experiment Station 7 American Orchid Society 6 British Society for Plant Pathology 6 Commonwealth Agricultural Bureaux 6 Commonwealth Mycological Institute (Great Britain) 6 see all ...

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