Beltran, R
The Great Lakes : An Environmental Atlas and Resource Book. - Third - Chicago, Ill : Government of Canada/United States Environmental Protection Agency, 1995.
0-662-23441-3
The Great Lakes--Lake Huron--Lake Superior--Lake Michigan
The Great Lakes : An Environmental Atlas and Resource Book. - Third - Chicago, Ill : Government of Canada/United States Environmental Protection Agency, 1995.
0-662-23441-3
The Great Lakes--Lake Huron--Lake Superior--Lake Michigan