Hurlbut, Cornelius S. 1906-2005.
Gemology / Cornelius S. Hurlbut, Jr., George S. Switzer. - New York : Wiley, c1979. - xii, 243 p., [12] leaves of plates : ill. ; 25 cm.
"A Wiley-Interscience publication."
Includes bibliographies and indexes.
047142224X
78013262
Precious stones.
QE392 / .H87
553/.8
Gemology / Cornelius S. Hurlbut, Jr., George S. Switzer. - New York : Wiley, c1979. - xii, 243 p., [12] leaves of plates : ill. ; 25 cm.
"A Wiley-Interscience publication."
Includes bibliographies and indexes.
047142224X
78013262
Precious stones.
QE392 / .H87
553/.8