Crop production /
Delorit, Richard J. 1921-
Crop production / by Richard J. Delorit and Henry L. Ahlgren - 3rd ed. - Englewood Cliffs, N.J. : Prentice-Hall, 1967 - 662 p. : ill., maps ; 25 cm. - Prentice-Hall vocational agriculture series .
67-003369
Field crops
Crop production / by Richard J. Delorit and Henry L. Ahlgren - 3rd ed. - Englewood Cliffs, N.J. : Prentice-Hall, 1967 - 662 p. : ill., maps ; 25 cm. - Prentice-Hall vocational agriculture series .
67-003369
Field crops