WEBSTER, F.G.A. Robert
Practical gemmology; a study of the identification of gem-stones, pearls,and orn - 5th ed. - London N.A.G.press 1973 - 209 p.
31622
553.8 / WEB
Practical gemmology; a study of the identification of gem-stones, pearls,and orn - 5th ed. - London N.A.G.press 1973 - 209 p.
31622
553.8 / WEB