Principles of field crop production
By: [by] John H. Martin [and] Warren H. Leonard.
Contributors: Leonard, Warren H., 1900- joint author.
Edition: 2d ed.
Publisher: Macmillan
Published: 1967
Place of publication: New York
Language: eng
Number of pages: 1044
Subjects: Field crops -- United States.
Other titles: Field crop production.
Notes: Includes bibliographies.