Biodiversity Heritage Library
By "Thomas, H. E. (Harold Edgar), 1906-"
The conservation of ground water; a survey of the present ground-water situation in the United States.
By: Thomas, H. E. (Harold Edgar),
Edition: 1st ed.
Publication info: New York,McGraw-Hill,1951.
Contributed by: MBLWHOI Library
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.
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