| http://www.w3.org/ns/prov#value | - A method for cleaning the surface of ferrous metals containing ferrous metal compounds which comprises contacting said surface at a pH of about 7 or below with an effective amount of an aqueous cleaning composition comprising:(a) a polyamino acid represented by the formula ##STR2## wherein R1 is selected from the group consisting of hydrogen and M wherein M is an alkali metal or alkaline earth met
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