Seasonal study of the aquatic insect life in a small woodland stream, McCutcheon Run, McKeever Environmental Learning Center, Mercer County, Pennsylvania, 190 - 01 - 04 - LD1017 .C8133 1977 D6, Volume: Archives LD1017 .C8133 1977 D6; Volume: Carlson Library Level A Main Quarto Collection QL496 .D6. Clarion University Archives.

Seasonal study of the aquatic insect life in a small woodland stream, McCutcheon Run, McKeever Environmental Learning Center, Mercer County, Pennsylvania, 190 - 01 - 04 - LD1017 .C8133 1977 D6, Volume: Archives LD1017 .C8133 1977 D6; Volume: Carlson Library Level A Main Quarto Collection QL496 .D6. Clarion University Archives. http://as-clarion.klnpa.org/repositories/2/resources/342 Accessed December 26, 2025.