TY  - BOOK
AU  - 
AU  - Poldervaart, Arie, Ed.
ED  - Symposium on Crust of the Earth
TI  - Crust of the earth: a symposium
U1  - 551.13 
PY  - 1955///
CY  - New York
PB  - Geological Society Of America
KW  - Crust of earth
ER  -