The New Encyclopædia BritannicaEncyclopædia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 301
... Michigan , Huron , Erie , and Ontario - form part of the St. Lawrence River system of east central North America and are one of the great natural features of that continent and the globe . Although Lake Baikal in the Soviet Union has a ...
... Michigan , Huron , Erie , and Ontario - form part of the St. Lawrence River system of east central North America and are one of the great natural features of that continent and the globe . Although Lake Baikal in the Soviet Union has a ...
Page 302
... Michigan lies directly south of Lake Superior and is bordered by upper and lower Michigan , Wisconsin , Illinois , and Indiana . It has a mean depth of 276 feet . The average water level is 579 feet above sea level , and its waters flow ...
... Michigan lies directly south of Lake Superior and is bordered by upper and lower Michigan , Wisconsin , Illinois , and Indiana . It has a mean depth of 276 feet . The average water level is 579 feet above sea level , and its waters flow ...
Page 303
... Michigan , its chemical content lies in the middle of the range . Alkalinity then increases as the waters flow into and through Lake Erie ( 95 parts per million ) and into Lake Ontario ( 102 parts per million ) . The overall chemical ...
... Michigan , its chemical content lies in the middle of the range . Alkalinity then increases as the waters flow into and through Lake Erie ( 95 parts per million ) and into Lake Ontario ( 102 parts per million ) . The overall chemical ...
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