ScienceJohn Michels (Journalist) 1955 |
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Стр. 310
... Michigan basin . Peat from the lowest 2 in . of the 30 - in . peat layer at the South Haven site . This dates the time when the waters of Lake Algonquin had al- ready begun to drop to the Lake Chippewa level . The date is thus a minimum ...
... Michigan basin . Peat from the lowest 2 in . of the 30 - in . peat layer at the South Haven site . This dates the time when the waters of Lake Algonquin had al- ready begun to drop to the Lake Chippewa level . The date is thus a minimum ...
Стр. 311
... Michigan basin about 5000 yr ago ( M - 290 ) and was coincident with the oak - pine period in southwest Michigan . ( iii ) The Xerothermic period reached a maximum some time after 4000 yr ago and is coincident in time with the Nipissing ...
... Michigan basin about 5000 yr ago ( M - 290 ) and was coincident with the oak - pine period in southwest Michigan . ( iii ) The Xerothermic period reached a maximum some time after 4000 yr ago and is coincident in time with the Nipissing ...
Стр. 592
... Michigan Academy of Science , Arts , and Letters : pres . , Willis Dunbar , Western Michigan College ; pres . - elect , Charles W. Creaser , Wayne University ; v . pres . , Richard A. Fennel , Michigan State College ; sec . , George M ...
... Michigan Academy of Science , Arts , and Letters : pres . , Willis Dunbar , Western Michigan College ; pres . - elect , Charles W. Creaser , Wayne University ; v . pres . , Richard A. Fennel , Michigan State College ; sec . , George M ...
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ANNUAL REVIEW | 166 |
PSYCHOLOGY | 189 |
Child Psychology M RadkeYarrow and L J Yarrow | 220 |
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