Effects of overwinter drawdown on the aquatic vegetation in Kahle Lake, Clarion-Venango Counties, Pennsylvania, 190 - 01 - 04 - LD1017 .C8133 1978 P6, Volume: Archives LD1017 .C8133 1978 P6; Volume: Carlson Library Level A Main Quarto Collection QH541.5.W3 P6. Clarion University Archives. http://buoy1.klnpa.org/repositories/2/resources/350 Accessed May 01, 2025.