TY  - BOOK
AU  - Thwaites,F.T.
TI  - Educational collection of Wisconsin rocks,
T2  - Educational series
AV  - QE179 .A2 no. 63
PY  - 1921///
CY  - Madison, Wis.
PB  - Published by the state
KW  - Rocks
KW  - Catalogs and collections
KW  - Petrology
KW  - Wisconsin
ER  -