Biodiversity Heritage Library
By "United States. Department of Agriculture. States Relations Service. "
List of workers in subjects pertaining to agriculture. Part 2. State agriculture colleges and experiment stations ... 1920-1921.
By: United States. Department of Agriculture. States Relations Service.
Publication info: Washington,Govt. Printing Office,1921.
Contributed by: Library of Congress
BHL Collections: Library of Congress
Some means of controlling insects, fungi, and other pests in Porto Rico /
By: Van Zwaluwenburg, R. H. (Reyer Herman), - Thomas, H. E. (Harold Edgar), - Puerto Rico Agricultural Experiment Station. - United States. Department of Agriculture. - United States. Department of Agriculture. States Relations Service.
Publication info: Washington :G.P.O. under the supervision of States Relations Service, Office of Experiment Stations, U.S. Dept. of Agriculture,1918.
Contributed by: U.S. Department of Agriculture, National Agricultural Library