Martin, John H.
Principles of field crop production / John H. Martin and Warren H. Leonard. - New York : Macmillan company, c 1951. - ix, 1176 p. : ill. ; 20 cm.
Includes index.
330 330
Crop production.
633 / M364p
Principles of field crop production / John H. Martin and Warren H. Leonard. - New York : Macmillan company, c 1951. - ix, 1176 p. : ill. ; 20 cm.
Includes index.
330 330
Crop production.
633 / M364p