000			003970000a22001450004500
245			_aPractical gemmology : a study of the identification of gemstones, pearls, and ornamental minerals
100			_aWebster, Robert
250			_a6th ed.
260			_aLondon _bNAG Press _c1976
300			_a209p. : ill.
080			_a549.091 _bW4
650			_aGEMMOLOGY
041			_aEN
942			_cBK _06
999			_c115220 _d115220