• 2 Steenbock Library

• 2 Journals, Magazines, Newspapers

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

• 1 Southern Forest Experiment Station (New Orleans, La.)
• 1 Tropical Forest Experiment Station (Rio Piedras, P.R.)

• 2 English
• 1 Spanish

• 1 Puerto Rico
• 1 United States Virgin Islands

• 1 Periodicals

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