000 004790000a22001690004500
008 170706t1947 xxu||||| |||| 00| 0 eng d
041 _aeng
080 _a549.091
_bK7
942 _cBK
_01
100 _aKraus, Edward Henry
700 _aSlawson, Chester Baker
245 _aGems and gem materials
250 _a5th ed.
260 _aNew York
_bMcGraw Hill
_c1947
300 _aix, 332p. : ill., photos, col. plates
_bbibliography and index included
650 _aPRECIOUS STONES
999 _c93639
_d93639