00745cam a2200253 4500 3781353 TxAuBib 19970605120000.0 ||||||s1974||||||||||||||||||||||||und|u 9780706403053 0706403053 (OCoLC)1147458 TxAuBib Bauer, Jaroslav. A field guide in color to minerals, rocks and precious stones / Photos. by Frantisek Tvrz. London : Octopus Books, 1974. 208 p : col. illus ; 22 cm. Bibliography: p. 208. 19970710. Mineralogy. Precious stones. Rocks. TXMLR