Battelle Memorial Institute, Columbus, Ohio. Dept. of Economics and Information Research. (1961). Specialized science information services in the United States: A directory of selected specialized information services in the physical and biological sciences. National Science Foundation, Office of Science Information Service.
Citace podle Chicago (17th ed.)Battelle Memorial Institute, Columbus, Ohio. Dept. of Economics and Information Research. Specialized Science Information Services in the United States: A Directory of Selected Specialized Information Services in the Physical and Biological Sciences. Washington: National Science Foundation, Office of Science Information Service, 1961.
Citace podle MLA (9th ed.)Battelle Memorial Institute, Columbus, Ohio. Dept. of Economics and Information Research. Specialized Science Information Services in the United States: A Directory of Selected Specialized Information Services in the Physical and Biological Sciences. National Science Foundation, Office of Science Information Service, 1961.