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- [26] ECONOMICS OF EQUIPMENT OPERATING COSTS PULP AND PAPER MAGAZINE OF CANADA, 1971, 72 (07): : 85 - &
- [27] REACTOR OPERATING AND MAINTENANCE COSTS TRANSACTIONS OF THE AMERICAN NUCLEAR SOCIETY, 1970, 13 (02): : 783 - &
- [29] OPERATING COSTS OF CENTRIFUGAL PUMPS SVENSK PAPPERSTIDNING-NORDISK CELLULOSA, 1979, 82 (08): : 233 - 235