• 2 Steenbock Library

• 2 International Institute of Tropical Forestry (Río Piedras, San Juan, P.R.)
• 2 Rain forests
• 1 International Union of Forestry Research Organizations

• 2 International Institute of Tropical Forestry (Río Piedras, San Juan, P.R.)
• 1 Food and Agriculture Organization of the United Nations
• 1 International Union of Forestry Research Organizations

• 4 English
• 2 French
• 1 German

• 2 Tropics

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