Tags: Box 12, Box 12 Folder 6, Date: june 5, 1967, Date: may 22nd, Folder topic: Water pollution control | 1967, Geopolitical Entity: Chicago, Geopolitical Entity: illinois, Organization: american public works association, Organization: research foundation, Person: herbert g. poertner, Person: Ivan Allen, Person: poertner, Person: R. Earl Landers, Person: reference
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