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- [8] THE ECONOMICS OF LEAK DETECTION AND REPAIR - A CASE-STUDY JOURNAL AMERICAN WATER WORKS ASSOCIATION, 1983, 75 (01): : 28 - 34
- [10] THE ECONOMICS OF EFFLUENT TREATMENT - A CASE-STUDY AT BOVRIL INTERNATIONAL BIODETERIORATION, 1989, 25 (1-3): : 97 - 105