Douglas Marsland. (1964). Principles of modern biology. New York: Holt, Rinehart and Winston.
Trích dẫn kiểu ChicagoDouglas Marsland. Principles of Modern Biology. New York: Holt, Rinehart and Winston, 1964.
ציטוט MLADouglas Marsland. Principles of Modern Biology. New York: Holt, Rinehart and Winston, 1964.
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