By Spring S. N.   in Journal of Forestry

ISSN:0022-1201|16|2|165-167

Society of American Foresters‎(1918)‎

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By Spring S. N.   in Journal of Forestry

ISSN:0022-1201|15|6|761-762

Society of American Foresters‎(1917)‎

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By Taslim M. E.   Spring S.   in Journal of the American Helicopter Society

ISSN:2161-6027|55|2|22006-0

AHS International‎(2010)‎

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By Graves Henry S.   Mulford Walter   Schmitz Henry   Spring S. N.   Dana S. T.   in Journal of Forestry

ISSN:0022-1201|38|2|197-201

Society of American Foresters‎(1940)‎

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By Bryant R. C.   Butler Ovid   Jeffers D. S.   Kynoch W.   Spring S. N.   in Journal of Forestry

ISSN:0022-1201|35|2|151-153

Society of American Foresters‎(1937)‎

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By Bryant R. C.   Butler Ovid   Jeffers D. S.   Krueger Myron S.   Kynoch W.   Spring S. N.   in Journal of Forestry

ISSN:0022-1201|34|3|347-351

Society of American Foresters‎(1936)‎

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By Demeritt D. B.   Guise C. H.   Schmitz Henry   Spring S. N.   Watts Lyle F.   Mulford Walter   Chapman H. H.   in Journal of Forestry

ISSN:0022-1201|38|2|189-191

Society of American Foresters‎(1940)‎

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By Guise C. H.   Schmitz Henry   Spring S. N.   Watts Lyle F.   Mulford Walter   Demeritt D. B.   Chapman H. H.   in Journal of Forestry

ISSN:0022-1201|37|2|139-140

Society of American Foresters‎(1939)‎

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