Non-lethal effects of predators on species interactions among freshwater snails, 190 - 01 - 04 - LD1017 .C8133 2001 B66, Volume: Archives LD1017 .C8133 2001 B66; Volume: Carlson Library Level A Main Quarto Collection QL430.4 .B66 2001. Clarion University Archives. http://buoy1.klnpa.org/repositories/2/resources/453 Accessed April 29, 2025.