TY  - BOOK
AU  - W.k.hamblin
TI  - Physical geology
PY  - 0000///
CY  - 
PB  - burguess publishing company
N1  - Exercises In Physical Geology, Fifth Edition. : 0-8087-3154-8. Minneapolis, 1980; Material Donado Por La Srta. Danitza Aliaga
ER  -