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- [4] PREFERRED NUMBERS IN ENGINEERING TRANSACTIONS OF THE INSTITUTION OF CHEMICAL ENGINEERS AND THE CHEMICAL ENGINEER, 1970, 48 (02): : CE53 - &
- [5] ANOTHER VIEWPOINT ON PREFERRED NUMBERS PROCEEDINGS OF THE INSTITUTE OF RADIO ENGINEERS, 1951, 39 (05): : 467 - 467
- [7] AMERICAN NATIONAL STANDARD FOR PREFERRED NUMBERS American National Standards Institute, Standards, 1973,
- [10] METRICATION - HOW PREFERRED NUMBERS HELP VARIETY REDUCTION ELECTRICAL REVIEW, 1969, 184 (18): : 643 - &