The Rockefeller Foundation
Authors:
- Bert E. ChristensenBCBert E. Christensen
- Elmer HansenEHElmer Hansen
- Vernon H. CheldelinVCVernon H. Cheldelin
- J. B. StarkJSJ. B. Stark
- 7 April 1939
- journal article
- research article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 89 (2310) , 319