Drought in the United States analyzed by means of the theory of probability
- Source:
- Technical bulletin / United States Department of Agriculture 1942
- Year:
- 1942
- Subject:
- Droughts -- United States -- Mathematical models, Meteorology -- Periodicity, and Weather forecasting
- Format:
- 63 p. : ill., maps ; 23 cm.
- Publisher:
- U.S. Dept. of Agriculture
- Collection:
- Organic Roots Collection