By Ketcham C. C.   in Journal of Forestry

ISSN:0022-1201|63|5|344-348

Society of American Foresters‎(1965)‎

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By Dounskaia N.   Ketcham C.   Stelmach G.   in Experimental Brain Research

ISSN:0014-4819|146|1|11-25

Springer Publishing Company ‎(2002)‎

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