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by NATIONAL AUDUBON SOCIETY
by I. N. Herstein (University of Chicago)
by Goldsack, Gaby; Amesbury, Paul; Grzenlinski, Tom; et al.
by Williams, Tennessee
by Schiffman, Lawrence H.
by Billingsley, William J.
by Donald R. Strombeck (Professor Emeritus, University of California, Davis)
by Bar-Shalom, Yaakov; University of California, Los Angeles University Extension; Shalom, Yaakov Bar
by Robert J. Berg (Bowling Green State University); Fabrice Leroy (Bowling Green State University)
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