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2. National Primary Drinking Water Regulations: Monitoring Requirements for Public Drinking Water Supplies: Cryptosporidium, Giardia, Viruses, Disinfection Byproducts, Water Treatment Plant Data and Other Information Requirements; Proposed Rule;USEPA;Fed. Reg.,1994
3. Comments on the Information Collection Rule Proposal Published in the Feb. 10, 1994;AWWA,1994
4. S chwartz , B.J. Unpublished data 1993
5. S tefanich , T.D. Unpublished data 1993