Human Helminthiases in the Philippines
Hinz, Erhard / Hellen, I. F. / Hellen, J. A.
For medical scientists, biologists and geographers interest ed in geomedical problems the helminthiases can be a fas cinating object of research. Their distribution is due to the in part very complicated parasite life cycles which fre quently depend on the presence of intermediate hosts. The search for the causes of the distribution of helminthiases requires to take into account not only such geofactors as affect the parasite developmental ...