Effect of nitrogen limitation on pellitisation in upflow anaerobic sludge bed (UASB) systems Effect of nitrogen limitation on pellitisation in upflow anaerobic sludge bed (UASB) systems
A morphometric and electrophoretic analysis of Labeo capensis and Labeo umbratus from two localities in Southern Africa A morphometric and electrophoretic analysis of Labeo capensis and Labeo umbratus from two localities in Southern Africa
A preliminary biochemical comparison of two species of the genus Barbus from the Vaal River system A preliminary biochemical comparison of two species of the genus Barbus from the Vaal River system
Spatial variations in the rate of fluvial erosion (sediment production) over South Africa Spatial variations in the rate of fluvial erosion (sediment production) over South Africa
Observations on concentrations of the heavy metals zinc, manganese, nickel and iron in the water, in the sediments and in two aquatic macrophytes, Typha capensis (Rohrb.) N.E. Br. and Arundo donax L., of a stream affected by goldmine and industrial efflue Observations on concentrations of the heavy metals zinc, manganese, nickel and iron in the water, in the sediments and in two aquatic macrophytes, Typha capensis (Rohrb.) N.E. Br. and Arundo donax L., of a stream affected by goldmine and industrial efflue
Canopy surface conductance of unstressed wheat and its weather dependence Canopy surface conductance of unstressed wheat and its weather dependence
Technical note: Chemical and ecological studies on Tilapia nilotica Technical note: Chemical and ecological studies on Tilapia nilotica
Hydrochemical applications of the analysis of repeated measurements Hydrochemical applications of the analysis of repeated measurements