1. Chem. Engng. News, p. 29, July 19, 1971.
2. "Non-Concept" of "No-Threshold": Chemicals in the Environment
3. Biosynthesis of dimethylarsine by methanobacterium
4. D. M. ROCK, Hydroxide precipitation and recovery of certain metallic ions from waste waters, a paper presented at the Annual American Institute for Chemical Engineers Meeting, Chicago, Illinois, December 1971.
5. J. W. PATTERSON and R. A. MINEAR, Wastewater Treatment Technology, IIEQ Document No. 71–4, State of Illinois, August 1971.