TY  - BOOK
AU  - Butler,David R.
TI  - Zoogeomorphology : animals as geomorphic agents / 
SN  - 0521433436
U1  - 591.51 
PY  - 1995///
CY  - Cambridge : 
PB  - Cambridge University Press , 
KW  - BIOGEOMORPHOLOGY
N1  - Includes references and index
ER  -