Specialised Science Information services in the United States:
a directory of selected specialised information services in the physical and biological sciences.

APA Citation

National Science Foundation (U.S.). Office of Science Information Service. (1961). Specialised Science Information services in the United States: a directory of selected specialised information services in the physical and biological sciences. .

MLA Citation

National Science Foundation (U.S.). Office of Science Information Service. Specialised Science Information Services In the United States: a Directory of Selected Specialised Information Services In the Physical And Biological Sciences. , 1961.

Warning: These citations may not always be complete (especially for serials).