TY  - BOOK
AU  - Grodzinski, Wladyslaw, editor. 
AU  - Cowling, Ellis B., editor. 
TI  - Ecological risks: perspectives from Poland and the United States 
SN  - 0309042933
U1  - FOR 577 Ec1 1990 
PY  - 1990///
CY  - Washington DC
PB  - National Academy Press
KW  - Ecological risks
ER  -