Principles of field crop production

Martin, John H. 1893-

Principles of field crop production [by] John H. Martin [and] Warren H. Leonard. - New York, Macmillan Co., 1949. - ix, 1176 p. illus., maps. 22 cm.

"References" at end of each chapter.

agr49000449


Field crops--United States.

SB187.U6 / M3

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