J. U. Grobbelaar

Modelling algal productivity and oxygen production in large outdoor cultures

Carl J. Soeder, J. U. Grobbelaar, Eberhard Dr Stengel, 1984 .

Extraction of chlorophyll a from freshwater phytoplankton for spectrophotometric analysis

J. U. Grobbelaar, J. Grobbelaar, D. Sartory, 1984, Hydrobiologia.