Relationships of Permafrost to Sanitation— Alter 253 



24. Varshavskiy A. A. Energetika Arktiki (Sources of energy in the 



Arctic). Sov. Arkt., 2: 75 ff. 1937. 



25. Whittaker, Harold A. Sanitation needs in Alaska. Alaska 



Department of Health. Juneau. 1949. 



26. Williams, Ralph B. Summary of Samonella and Shigella of 



Alaska. Northwest Medicine, 49 (5): 340. May, 1950. 



27. Wilson, Charles S. Aerosol spray units for control of biting 



insects. Mosquito News, 10 (2): 51-54. June, 1950. 



28. Climate and Man. U. S. Department of Agriculture. Washing- 



ton. 1941. 



29. Community facilities in Alaska. Alaska Department of Health. 



Juneau. 1949. 



30. Vechnaia Merzlota. Sbornik (Eternal frost. Collection of 



Works). Izd. Akad. Nauk S.S.S.R., Moskva. 1930. 



31. Zhilishchnye usloviia naseleniia Krainego Severa (Housing 



conditions of the population of the extreme North). Sov. 

 Sever, 5: 78 ff. 1932. 



