By Williamson Darrell L.   Schenk John A.   Barr William F.   in Forest Science

ISSN:0015-749X|12|2|234-240

Society of American Foresters‎(1966)‎

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By CLARK EDWIN C.   SCHENK JOHN A.   WILLIAMSON DARRELL L.   in Annals of the Entomological Society of America

ISSN:1938-2901|56|2|246-250

Entomological Society of America‎(1963)‎

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