000 00412pam a2200169a 44500
082 _a552.8
_bK86g5
100 _aKraus, Edward Henry
245 1 _aGEMS AND GEM MATERIALS
250 _a5th
260 _aN. Y.
_bMcgraw-Hill
_c1947
300 _a352
500 _aSelected Bibliography : P. 317-319
650 _aPrecious Stones
700 _aSlawson, Chester Baker
964 _gCIRC
997 _a74119 C
999 _c415458
_d415458