1. Chemicals — how many are there?;Maugh;Science,1978
2. Fate of toxic organic compounds in wastewater treatment plants;Petrasek;J. Water Pollut. Cont. Fed.,1983
3. Comparative removal of toxic pollutants by six wastewater treatment processes;Hannah;J. Water Pollut. Cont. Fed.,1986
4. Removal of organic toxic pollutants by trickling filter and activated sludge;Hannah;J. Water Pollut. Cont. Fed.,1988
5. Sludge disposal — keeping it safe;Davis;Water Waste Treat.,1984