KRAUS, EDWARD HENRY.
Gems and gem materials, by Edward Henry Kraus & Chester Baker Slawson. 4th ed.
KRAUS, EDWARD HENRY. Gems and gem materials, by Edward Henry Kraus & Chester Baker Slawson. 4th ed. © 3Dec41; A159509. Edward Henry Kraus (A); 24Apr69; R460353.
Edward Henry Kraus|A