Parial replacement of fish meal with either soybean meal, brewers yeast or tomato meal in the diets of African sharptooth catfish Clarias gariepinus
The need for guidelines to bridge the gap between ideal drinking-water quality and that quality which is practically achievable and acceptable
Evaluation of a number of methods for the determination of trace amounts of phosphates with flow injection analysis (FIA)
Preliminary empirical models to predict reductions in total and low flows resulting from afforestation