TY  - BOOK
AU  - Stoll,Walter Clericus
TI  - Mica and beryl pegmatites in Idaho and Montana: A description of mines and prospects examined in each district, some illustrated by maps and structure sections
T2  - Geological Survey professional paper 229
AV  - QE75 .P9 no. 229
U1  - 553.9 
PY  - 1950///
CY  - Washington
PB  - U.S. Govt. Print. Off.
KW  - Mica
KW  - Beryl
KW  - Pegmatites
ER  -