Swart, P.J.; Reinecke, R.K.; Jansen, B.C.
(Pretoria : Government Printer, 1962)
1. Methods of collecting paramphistome eggs, largely freed of faeces, and their hatching are described.
2. Young B. tropicus were readily infested with paramphistomes: only 12.4 per cent of adult snails were infested. ...