Provides a reference work, in particular the key to the identification of the southern African species. This book has a chapter on Bilharzia and its snail hosts, especially important at a time when Primary health care programmes are implemented. It also addresses access to safe drinking water to be regarded as a fundamental human right.
Provides a reference work, in particular the key to the identification of the southern African species. This book has a chapter on Bilharzia and its s...