• 3 Verona Shelving Facility

• 33 Agriculture
• 20 Research
• 8 Tropical crops
• 6 Centro Internacional de Agricultura Tropical
• 6 Field crops
• 6 Forests and forestry
• 4 International Crops Research Institute for the Semi-Arid Tropics
• 3 Arid regions agriculture
• 3 Bibliography
• 3 International cooperation
• 3 Pastures
• 2 Ecology
• 2 Economic aspects
• 2 Rain forests
• 2 Sustainable agriculture
• 1 Agricultural assistance, French
• 1 Beans
• 1 Botany
• 1 CIRAD (Organization)
• 1 Cropping systems
• 1 Crops
• 1 Forage plants
• 1 Forest conservation
• 1 Grasses
• 1 IUCN Forest Conservation Programme

• 16 Centro Internacional de Agricultura Tropical
• 7 International Crops Research Institute for the Semi-Arid Tropics
• 3 International Institute of Tropical Agriculture
• 2 Institute of Tropical Forestry (Río Piedras, San Juan, P.R.)
• 2 International Crops Research Institute for the Semi-Arid Tropics. Economics Program
• 2 International Institute of Tropical Forestry (Río Piedras, San Juan, P.R.)
• 2 Nettai Nōgyō Kenkyū Sentā
• 2 Southern Forest Experiment Station (New Orleans, La.)
• 1 Akademie der Wissenschaften und der Literatur (Germany). Mathematisch-Naturwissenschaftliche Klasse
• 1 CIRAD (Organization)
• 1 Central America and Mexico Resources Cooperative
• 1 Centro Agronómico Tropical de Investigación y Enseñanza
• 1 Centro Agronómico Tropical de Investigación y Enseñanza. Departamento de Producción Vegetal
• 1 Centro Agronḿico Tropical de Investigación y Enseñanza. Prograna de Cultivos Anuales
• 1 Centro Nacional de Investigaciones Agropecuarias
• 1 Centro Nacional de Pesquisa Agropecuária do Trópico Umido (Brazil)
• 1 Centro de Información sobre Pastos Tropicales del CIAT
• 1 Empresa Brasileira de Pesquisa Agropecuária. Vinculada ao Ministéro da Agricultura
• 1 Fondo Nacional de Investigaciones Agropecuarias
• 1 Food and Agriculture Organization of the United Nations
• 1 IUCN Forest Conservation Programme
• 1 Institut Pertanian Bogor
• 1 International Institute of Agriculture
• 1 International Society for Tropical Ecology
• 1 Maracay (Venezuela). Instituto Nacional de Agricultura

• 45 English
• 11 Spanish
• 1 French
• 1 German
• 1 Portuguese

• 4 Latin America
• 2 Colombia
• 1 Brazil
• 1 Caribbean area
• 1 Central America
• 1 Japan
• 1 Mexico
• 1 Nigeria
• 1 Puerto Rico
• 1 United States Virgin Islands

• 36 Periodicals
• 1 Abstracts

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