Search Results - Roy Fredericks

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Soil and water conservation : for productivity and environmental protection Frederick R. Troeh, J. Arthur Hobbs, Roy L. Donahue.

by Troeh
Published 2004

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Soil and water conservation : Productivity and environmental protection Frederick R. Troeh, J. Arthur Hobbs, Roy L. Donahue.

by Troeh, Frederick R
Published 1999

Other Authors: '; “...Donahue, Roy Luther,...”

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Auditory Perception of Sound Sources edited by William A. Yost, Richard R. Fay, Arthur N. Popper.

Published 2008

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