Ultrastructure of the flame bulbs and protonephridial capillaries of Rugogaster hydrolagi (Platyhelminthes, Trematoda, Aspidogastrea)N. A. Watson and K. RohdeAnn. Parasitol. Hum. Comp., 67 3 (1992) 67-74DOI: https://doi.org/10.1051/parasite/199267367