Kraus, Edward Henry, 1875-1973.
Gems and gem materials, by Edward Henry Kraus and Chester Baker Slawson. - 4th ed. - New York, McGraw-Hill Book Co., 1947. - ix, 332 p. : illus. ; 23 cm.
"Selected bibliography": p. 317-319.
48000379
Precious stones.
QE392 / .K7 1947
553.8 / KRG
Gems and gem materials, by Edward Henry Kraus and Chester Baker Slawson. - 4th ed. - New York, McGraw-Hill Book Co., 1947. - ix, 332 p. : illus. ; 23 cm.
"Selected bibliography": p. 317-319.
48000379
Precious stones.
QE392 / .K7 1947
553.8 / KRG