Gross, Martin L., author
Avon Books, 1998
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Picard, Ellen J.
Carswell Thomson Profesional Publishing, 1996
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Thomasine K. Kushner, David C. Thomasma
Cambridge University Press, 2001
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Hanny Sabrina Bahri, author
2019
UI - Skripsi Membership
Schutte, James E
Hogrefe and Huger, 1995
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