The uses of efficiency factors in analysis of farm records /
by John A. Hopkins, Jr.

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Main Author
Hopkins, John A., 1897-
Language(s)
English
Published
Ames, Iowa : Agricultural Experiment Station, Iowa State College of Agriculture and Mechanic Arts, [1933?].
Subjects
Farm management > Records and correspondence
Physical Description
p. 124-176 : charts ; 22 cm.
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Full view   v.160(1933) University of Illinois at Urbana-Champaign