00314nam a2200109Ia 450000500170000000800410001708200150005810000200007324500640009326000390015730000080019620260225051109.0260224s9999||||xx |||||||||||||| ||und||  a631.47 TYR  aA. P. Tyrtikov  0aEffects of vegetation on the freezing and thawing of soils   aNew Delhi: Amerind Pub. Co. c1976  a196