Illinois agricultural land productivity formula.
By: J. S. Lohse, P. Giordano, M. C. Williams and F. A. Vogel.
Contributors: Giordano, Paul M.; Williams, M. C; Vogel, F. A
Publisher: s.n
Published: 1985
Place of publication: S.l
Notes: Pages 24-39 in Am. Soc. for Surface Mining and Reclamation. Denver, CO.

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