TY  - BOOK
AU  - Ashworth,William
TI  - The late, Great Lakes: an environmental history 
SN  - 0394551516
AV  - QH545.W3 A68 1986
U1  - 363.7/3942/0977 19
PY  - 1986///
CY  - New York
PB  - Knopf, Distributed by Random House
KW  - Water
KW  - Pollution
KW  - Environmental aspects
KW  - Great Lakes
KW  - History
KW  - Lake ecology
N1  - Map on lining papers; Includes bibliographical references (p. 255-262) and index
ER  -