Criteria for species determination in the 'revolutum' group of Echinostoma.

@article{Fried2004CriteriaFS,
  title={Criteria for species determination in the 'revolutum' group of Echinostoma.},
  author={Bernard Fried and Rafael Bravo Toledo},
  journal={The Journal of parasitology},
  year={2004},
  volume={90 4},
  pages={917}
}