By Junttila Olavi   Heide Ola M.   in Forest Science

ISSN:0015-749X|27|3|423-430

Society of American Foresters‎(1981)‎

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By Havstad Lars T.   Aamlid Trygve S.   Heide Ola M.   Junttila Olavi   in Acta Agriculturae Scandinavica, B

ISSN:0906-4710|54|1|23-30

Taylor & Francis Ltd‎(2004)‎

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