Studies on digenetic trematodes from fresh water fishes of India. Part 1. On four new species of the genus Satyapalia Lakshminarayana and Hafeezullah, 1974 (Digenea: Opisthorchiidae). Rivista di Parassitologia, 45(1) 1985: 11-17. 14 [Zoological Record Volume 122]