A procedure for describing fish and wildlife: coding instructions for Pennsylvania
By: W. T. Mason Jr., C. T. Cushwa, L. J. Slaski and D. N. Gladwin.
Contributors: Cushwa, C. T; Slaski, L. J; Gladwin, D. N
Publisher: s.n
Published: 1979
Place of publication: S.l
Notes: 13