Cleaning Kills!
(Page 6 of 6)
November/December 1970
By the Mother Earth News editors
It should be noted that these are just recommendations; compliance is not required. The report also contains a list of products and their phosphate contents as furnished by the manufacturer and as determined by the FWPCA. That list has been combined with others from the University of Toronto and Northwestern University, all of which are in general agreement, to produce the following more complete listing. In the case of low or phosphate-free products confirming estimates by sources other than the manufacturer are also noted. Source code is; Manufacturer's Estimate, M; FWPCA, F; University of Toronto, T; Northwestern University, N.
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