By Renzi C.   Zantedeschi E.   Signorelli C.   Osborn J.F.   in Preventive Medicine

ISSN:0091-7435|32|1|40-48

Academic Press‎(2001)‎

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By Felker Peter   Cannell G. H.   Clark Peter R.   Osborn J. F.   Nash P.   in Forest Science

ISSN:0015-749X|29|3|592-606

Society of American Foresters‎(1983)‎

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