Key to subject index of experiment station literature.
APA Citation
United States. Dept. of Agriculture. States Relations Service. (1917). Key to subject index of experiment station literature. Revised Dec. 1, 1916. Washington: Govt. print. off..
MLA Citation
United States. Dept. of Agriculture. States Relations Service. Key to Subject Index of Experiment Station Literature. Revised Dec. 1, 1916. Washington: Govt. print. off., 1917.
Warning: These citations may not always be complete (especially for serials).