Read, Peter G.
Gemmological instruments : their use and principles of operation / Peter G. Read. - London ; Boston : Newnes-Butterworths, 1978. - 227 p. : ill. ; 23 cm.
Includes bibliographical references and index.
0408003162
77030649
GB***
Precious stones--Instruments.
Precious stones--Testing.
QE392 / .R43 1978
Gemmological instruments : their use and principles of operation / Peter G. Read. - London ; Boston : Newnes-Butterworths, 1978. - 227 p. : ill. ; 23 cm.
Includes bibliographical references and index.
0408003162
77030649
GB***
Precious stones--Instruments.
Precious stones--Testing.
QE392 / .R43 1978