Crop production /
Delorit, Richard J. 1921-
Crop production / Richard J. Delorit [and] Henry L. Ahlgren. - 2d ed. - Englewood Cliffs, N.J. : Prentice-Hall, 1954, c1959 - 666 p. : ill. ; 24 cm. - Prentice-Hall vocational agriculture series .
Field crops.
633 / DEC 1959
Crop production / Richard J. Delorit [and] Henry L. Ahlgren. - 2d ed. - Englewood Cliffs, N.J. : Prentice-Hall, 1954, c1959 - 666 p. : ill. ; 24 cm. - Prentice-Hall vocational agriculture series .
Field crops.
633 / DEC 1959