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2. Barrett, J. P. "Short cut sampling methods for eastern white pine" (to be 

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14. Rich, J. H. 1954. "Dividends from pruning forest trees". Leaflet No. 272, Ex- 

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15. Smithers, L. A. 1954. "Thiiming in red and white pine stands at Petawawa 

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16. Spurr, Stephen H.. Leigh J. Young, Burton V. Barnes and E. L. Hughes. 1957. 

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17. Wahlenberg, W. G. 1955. "Six thinnings in a 56 year old pure white pine plan- 

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