000 00400nam a2200145Ia 4500
100 _aRobert Webster
020 _a7198 0011 0
250 _a6th ed
654 _aPolytechnic - Jewellery
942 _cBK
245 _aPractical gemmology : a study of the identification of gemstones,pearls,and ornamental minerals
260 _aColchester, NAG Press
_cc1976
082 _a736.2 Web
300 _a209p
999 _c35915
_d35915