000 00310nam a22001097a 4500
008 230327b |||||||| |||| 00| 0 eng d
022 _a0971-0981
040 _aNational Science Library
_cNational Science Library
245 _aMineral & mining world
260 _aNew Delhi:
_bN. K. Singhal,
_c1990
942 _cCR
999 _c15109
_d15109