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Soils and soil fertility /

By Troeh, Frederick R.. Ames, Iowa : Blackwell Pub., 2005 . viii, 489 p. : , Price : 246 L. 26 cm.. 081380955X (alk. paper)

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Soils and soil fertility / , Frederick R. Troeh, Louis M. Thompson.

By Troeh, Frederick R.. Ames, Iowa : Blackwell Pub., 2005 . viii, 489 p. : , Price.246 L. 26 cm.. 081380955X (alk. paper)

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

By Troeh, Frederick R.. Upper Saddle River, N.J. : Pearson/Education : | Prentice Hall, 2004 . xv, 656 p. : , Price - 204 L. 25 cm.. 0130968072 (alk. paper)

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