000 00300nam a2200121Ia 4500
008 220505s1987 xx 000 0 und d
041 _aeng
082 _a551/RZA
100 _aRzhevsky,V.V
_9668446
245 _aOpencast mining
260 _aMoscow
_bMir Publishers
_c1987
650 _aGEOLOGY
_9668447
999 _c462001
_d462001