000 00251 a2200109 4500
999 _c135380
_d135380
082 _a551 GOR-YAK
100 _aGorshkov, G
245 _aPhysical Geology
260 _aMoscow:
_bMIR Publication,
_c1977.
300 _a690p.;
_c22 cm.
650 _aGeology