(1984). The Key to Philippine forest conservation: The defense of the dipterocarps. Columbian Publishing Corporation.
Citace podle Chicago (17th ed.)The Key to Philippine Forest Conservation: The Defense of the Dipterocarps. Manila: Columbian Publishing Corporation, 1984.
Citace podle MLA (9th ed.)The Key to Philippine Forest Conservation: The Defense of the Dipterocarps. Columbian Publishing Corporation, 1984.
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