A methods manual for the collection, preparation and analysis of diatom samples A methods manual for the collection, preparation and analysis of diatom samples
An illustrated guide to some common diatom species from South Africa An illustrated guide to some common diatom species from South Africa
Sediment control at river abstraction works in South Africa: Vol 1 Sediment control at river abstraction works in South Africa: Vol 1
Multi-dimensional models for the sustainable management of water quantity and quality in the Orangevaal-Riet convergence system Multi-dimensional models for the sustainable management of water quantity and quality in the Orangevaal-Riet convergence system
Economy vs environment – how do we protect our rivers? Economy vs environment - how do we protect our rivers?