Pollution patterns in the Ohio River, 1950; water-quality conditions and changes revealed by a simultaneous sampling of the 963-mile stretch from Pittsburgh to Cairo

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110 2 ‡aOhio River Valley Water Sanitation Commission.
245 1 0 ‡aPollution patterns in the Ohio River, 1950; ‡bwater-quality conditions and changes revealed by a simultaneous sampling of the 963-mile stretch from Pittsburgh to Cairo.
260 ‡a[Cincinnati, Ohio, ‡c1951]
300 ‡a30, [47] p. ‡bplates (diagrs.; part fold.) ‡c28 cm.
500 ‡aCover title.
538 ‡aMode of access: Internet.
650 0 ‡aWater ‡xPollution ‡zOhio River.
CID ‡a009220619
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