[diplodiscus subclavatus (pallas, 1760) (trematoda) and acanthocephalus ranae (schrank, 1788) (acanthocephala) in grass snake--natrix natrix ( l.)]. | examination of two grass snakes--natrix natrix (l.) from the kielce revealed one trematode (diplodiscus subclavatus) and one acanthocephalan (acanthocephalus ranae). these species were noted in grass snake in poland for the first time. | 1993 | 8128729 |