McLean, Daniel D., Hurd, Amy R
Jones and Bartlett Publishers
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Jones, Stanley E., 1933-, Hosein, H. Roland, Swalm, Glenn R., Yablonsky, Jack F.
Lewis Publishers
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Kraus, Richard G.
Scott, Foresman
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Bovaird, A. G., Tricker, M. J., 1949-, Stoakes, R., 1948-
Gower
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Russell, Ruth V., 1948-
Mosby
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McLean, Daniel D., Hurd, Amy R, Rogers, Nancy Brattain
Jones and Bartlett Publishers
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United States. Bureau of Land Management
NTIS
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Connors, Tracy Daniel
J. Wiley
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Kotler, Philip
Prentice-Hall
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Pimlott, J. A. R. (John Alfred Ralph), 1909-
Studio Vista
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Butler, George Daniel
McGraw-Hill
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