TY  - BOOK
AU  - Schaller,Waldemar T.
TI  - Gems and precious stones in 1916
T2  - Mineral Resources of the United States, 1916-Part II
U1  - 553.8 
PY  - 1918///
CY  - Washington, D.C.
PB  - Government Printing Office
KW  - MINERIA
KW  - GEMAS
KW  - PIEDRAS PRECIOSAS
N1  - Impreso
ER  -