Opisthodiscus diplodiscoides Cohn, 1904 (Trematoda, Diplodiscidae) in Rana esculenta s.1. in Poland, with remarks on its synonymy and geographical distribution
Opisthodiscus diplodiscoides Cohn, 1904 (Trematoda, Diplodiscidae) w Rana esculenta s.1. w Polsce i uwagi o jego synonimach i rozmieszczeniu geograficznym