ORIGINAL RESEARCH
Preliminary Investigation into Occurrence
and Removal of Arsenic, Cadmium, Mercury,
and Zinc in Wastewater Treatment Plants
in Cape Town and Stellenbosch
Olanrewaju O. Olujimi1,3, Olalekan S. Fatoki2, James Odendaal3,
Adegbenro P. Daso3, Ogheneochuko Oputu2
Pol. J. Environ. Stud. 2012;21(6):1755-1765
ORIGINAL RESEARCH
Survival of Escherichia coli in Freshwater
R. Wcisło, R.J. Chróst
Pol. J. Environ. Stud. 2000;9(3):215-222