The New Encyclopaedia Britannica: Macropaedia: knowledge in depth. 19 vEncyclopaedia Britannica, Incorporated, 1981 - Encyclopedias and dictionaries |
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Page 301
... Lake Superior in the west to Lake Ontario in the east ; it covers an area larger than France or Afghanistan . Except for Lake Michigan , the lakes provide a natural border be- tween Canada and the United States , a frontier that was ...
... Lake Superior in the west to Lake Ontario in the east ; it covers an area larger than France or Afghanistan . Except for Lake Michigan , the lakes provide a natural border be- tween Canada and the United States , a frontier that was ...
Page 302
... lake , usually caus- ing a progressively increasing rate of flow . Lake Superior , bordered by Ontario , Minnesota , Wis- consin , and upper Michigan , is the northernmost and westernmost lake and can be considered the headwater of the ...
... lake , usually caus- ing a progressively increasing rate of flow . Lake Superior , bordered by Ontario , Minnesota , Wis- consin , and upper Michigan , is the northernmost and westernmost lake and can be considered the headwater of the ...
Page 303
... lake basins . The Great Lakes have bicarbonate waters , the alkalinity of which ranges from 46 parts per million of carbonates in Lake Superior to 110 parts per million in Lake Michi- gan . Because Lake Huron is fed by both Superior and ...
... lake basins . The Great Lakes have bicarbonate waters , the alkalinity of which ranges from 46 parts per million of carbonates in Lake Superior to 110 parts per million in Lake Michi- gan . Because Lake Huron is fed by both Superior and ...
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