TY  - BOOK
AU  - HARKER, A
TI  - The Natural History of Igneous Rocks
U1  - H21 
PY  - 1965///
CY  - NEW YORK
PB  - HAFNER PUBLISHING COMPANY, INC
KW  -  THE NATURAL HISTORY OF IGNEOUS ROCKS
KW  - IGNEOUS ROCKS
ER  -