Crop production :
Metcalfe, Darrel S., 1913-
Crop production : principles and practices / Darrel S. Metcalfe, Donald M. Elkins. - 4th ed. - New York : Macmillan, 1980. - ix, 774 p. : ill. ; 25 cm.
First-2d ed. by H. D. Hughes and E. R. Henson; 3d ed. by H. D. Hughes and D. S. Metcalfe.
Includes bibliographies and index.
0023807105
Field crops.
SB185 / M48 1980
Crop production : principles and practices / Darrel S. Metcalfe, Donald M. Elkins. - 4th ed. - New York : Macmillan, 1980. - ix, 774 p. : ill. ; 25 cm.
First-2d ed. by H. D. Hughes and E. R. Henson; 3d ed. by H. D. Hughes and D. S. Metcalfe.
Includes bibliographies and index.
0023807105
Field crops.
SB185 / M48 1980