Water quality data for Ontario lakes and streams, Volume XXVI Central Region 1990 26, Central Region 1990
Period covered by reports is irregular 1970/71, 1975, 1984 and 1990 issued in parts: [pt.1] Southeastern region; [pt.2] Northeastern region; [pt.3] Southwestern region; [pt.4] Northwestern region; [pt.5] Central region; [pt.6] West Central region 1975-77 is a special study with title: Water quality data collected for the Pollution From Land Use Activities Reference Group (PLUARG) study, 1975, 1976 and 1977 Chiefly tables Cover title starts from 1970/71: Water quality data Ontario lakes and streams Description based on: 1966/67 Library has: 1966/67, 1970-71 pt.1-2, 1974, 1975 pt.1-2, 1975-77,1976-1980, 1984 pt.1-3, 1990 pt.1-6 40
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