- Publication venue
- Washington,1947.
- Publication date
- 01/01/1947
- Field of study
no.6
- Publication venue
- Blacksburg, Va. : Virginia Polytechnic Institute. Virginia Agricultural Experiment Station,
- Publication date
- Field of study
Mode of access: Internet
- Publication venue
- University of Arkansas Libraries, Fayetteville
- Publication date
- 01/06/1929
- Field of study
- Publication venue
- Washington, D.C. :U.S.D.A.,1944.
- Publication date
- 01/01/1944
- Field of study
no.4