References
- AHLMAN, H. W., 1948. The Present Climatic Fluctua-tion, Geographical Journal, vol. 62. 4-6, pp. 165–195.
- BRIER, G. W., 1946. A study of quantitative precipitation forecasting in the TVA Basin, U. S. Weather Bureau research paper No. 26, 40 PP.
- BRIER, G. W., 1947. Forty year trends in Northern He-misphere surface pressure, Bull. Amer. Met. Soc., 28, PP. 237-247-
- BRIER, G. W 1948: Changes in the Northern Hemis-phere sea-level circulation in the 40 year period 1899-1939. Transactions, AGU, 29, 6, pp. 789–795.
- KINCER, J. B., 1946. Our changing Climate. Transactions AGU, 27, 3, pp. 342–347.
- MUNRO, ELLA H., 1948. Tables on Sunspot-Frequency for 1749-1948, Journal of Geophysical Research, 53, 3.
- U. S. Weather Bureau and Army Air Forces, 1943.44: Historical Weather Maps, Northern Hemisphere, Sea Level.
- U. S. Weather Bureau and Army Air Forces 1946, a: Normal Weather Maps, Northern Hemisphere, Sea Level Pressure.
- U. S. Weather Bureau, 1946, b: Mean Monthly Pressure Maps, Northern Hemisphere Sea Level, (Unpublished).
- WILLETT, H. C., 1949, Long-period fluctuations of the general circulation of the atmosphere. Journal of Meteorology, 6, 1, pp, 34-50.