1. Phase boundary water in frozen soils;Anderson;U.S. Army Corps of Eng., Cold Regions Res. Eng. Lab., Res. Rep.,1970
2. Inhibition of urease activity in soils;Bremner;Soil Biol. Biochem.,1971
3. Bacterial activities in frozen soils;Brown;Iowa Agr. Exp. Sta. Res. Bull.,1912
4. Salt and water movement in unsaturated frozen soil;Cary,1972
5. Bacteria in frozen soil;Conn;Centralblatt Bakt. II,1910