SOMMER, ROBERT; SOMMER, BARBARA B. — A Practical Guide to Behavioral Research
New York, NY, U.S.A. Oxford University Press, Incorporated. 1986. (ISBN: 0-19-503978-5). Soft Cover. Publisher: Oxford University Press, 1986, Good, Soft Cover, ISBN: 0-19-503978-5. Good.
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Numero libro:
003466
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