TY  - BOOK
ED  - United States.
TI  - Great Lakes water levels, 1860-1990: monthly and annual average water surface elevations 
AV  - GB1627.G8 G743 1992
PY  - 1992///
CY  - [Rockville, Md.]
PB  - U.S. National Oceanic and Atmospheric Administration. National Ocean Service
KW  - Great Lakes
KW  - Water level
ER  -