TY  - BOOK
AU  - Montgomery,Carla W.,1951-
AU  - Dathe,David
TI  - Earth: then and now 
SN  - 0697115194
PY  - 1991///
CY  - Dubuque, Iowa
PB  - Wm. C. Brown Publishers
KW  - Geology
KW  - Historical geology
ER  -