Watt, K. E. F. (1968). Ecology and resource management: A quantitative approach. New York: McGraw-Hill Book Company.
Παραπομπή Chicago StyleWatt, Kenneth E. F. Ecology and Resource Management: A Quantitative Approach. New York: McGraw-Hill Book Company, 1968.
Παραπομπή MLAWatt, Kenneth E. F. Ecology and Resource Management: A Quantitative Approach. New York: McGraw-Hill Book Company, 1968.
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