TY  - BOOK
AU  - Ashworth,William
TI  - The late, Great Lakes: an environmental history 
SN  - 0394551516
U1  - 363.7 12
PY  - 1986///
CY  - New York
PB  - Knopf
KW  - Water pollution
KW  - Environmental aspects
KW  - History
KW  - sears
KW  - Lake ecology
KW  - Great Lakes
N1  - Includes bibliographical references
ER  -