TY  - BOOK
AU  - Pirsson, Louise Valentine
TI  - Rocks and rock minerales: A manual of the elements of petrology without the use of the microscope, for the geologist, engineer, miner, architect, etc., and for instruction in colleges and schools 
AV  - QE431 P68
PY  - 1908///
CY  - New York
PB  - J. Wiley
KW  - Petrología
ER  -