Advances in agronomy.
Norman, Arthur Geoffrey,1905-
American Society of Agronomy.
New York : Academic Press,
1949-
Editor: v. 1-   A. G. Norman.
References at end of each chapter.
Biological & agricultural index
Bibliography of agriculture
Biological abstracts
Chemical abstracts
GeoRef
Life sciences collection
Vols. for 19 prepared under the auspices of the American Society of Agronomy.
Vols. 1-30. (Issued as v. 32) 1 v.
Agriculture
Agriculture