The chemical composition of representative grades of the 1952 and 1954 crops of flue-cured tobacco, including chemical methods /

Literature cited: p. 124 -125.

Development of field research equipment and evaluation of methods of establishing forage crops /

Caption title.

Tolerance of certain crops to several aquatic herbicides in irrigation water /

Caption title.

Regional analysis of production adjustments in the major field crops : historical and prospective : an application of spatial linear programming /

Literature cited and selected references: p. 38-41.

Stem sawflies of economic importance in grain crops in the United States,

"Literature cited": p. 37-50.

Regional location of production of major field crops at alternative demand and price levels, 1975; a linear programing analysis,

Issued in cooperation with Iowa State University of Science and Technology, Agriculture and Home Economics Experiment Station, and the Center for Agricultural and Economic Development.

The influence of weather on crops, 1900-1930 : a selected and annotated bibliography /

Includes index.

A graphic summary of farm crops : (based largely on the census of 1930 and 1935) /

"Issued March 1938."

The mineral composition of crops with particular reference to the soils in which they were grown : a review and compilation /

"The work represented by this publication was supported by the Bankhead-Jones research fund. It was initiated in the Bureau of chemistry and soils (now the Bureau of agricultural chemistry and engineering) and was later transferred to the Bureau of plant industry."--P. 1.

Response of several crops to six herbicides in irrigation water /

Cover title.

A Graphic summary of farm crops : (based largely on the census of 1940) /

Includes index.

Our farm crops. Being a popular scientific description of the cultivation, chemistry, diseases, remedies, &c., of the various crops cultivated in Great Britain and Ireland.

Mode of access: Internet.

Crops : their characteristics and cultivation : a practical handbook /

Includes index.

Educational outline: UAW-GM national agreement, June 12, 1955.

Mode of access: Internet.

Competition between soybeans and other crops in major U.S. regions /

Mode of access: Internet.