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Annual Annual Number of Growing Degree-days
Annual Number of Growing Degree-days.

From Joyce and Alan Macpherson, The Natural Environment of Newfoundland and Labrador, Past and Present (St. John's, Newfoundland: Department of Geography, Memorial University of Newfoundland and Labrador, © 1981) 106. Adapted by Duleepa Wijayawardhana with permission of MUNCL, 1998.
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