By Umbach D. M.   Davis D. D.   in Forest Science

ISSN:0015-749X|30|3|587-596

Society of American Foresters‎(1984)‎

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By SPECKER D. R.   SHIELDS E. J.   UMBACH D. M.   ALLANI S. A.   in Journal of Economic Entomology

ISSN:1938-291X|83|4|1541-1548

Entomological Society of America‎(1990)‎

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By Manasco P K   Umbach D M   Muly S M   Godwin D C   Negro-Vilar A   Culler M D   Underwood L E   in Human Reproduction

ISSN:1460-2350|12|10|2108-2114

Oxford University Press‎(1997)‎

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