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621.3.051/DES
Electrical power system design /
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621.3.061( 026) B. I. S.
Guide for preparation of diagrams,charts & tables for electrotechnology, Part III:general requirements for diagrams
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621.3.061 B. I. S.
Guide for preparation of diagrams, charts and tables for electrotechnology, Part II:item designation
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621.3.061 B. I. S.
Guide for preparation of diagrams, charts & tables for electrotechnology, Part IV:circuit diagrams
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621.3.061 B. I. S.
Guide for preparation of diagrams charts & tables for electrotechnology,Part V : interconnection diagrams and tables
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621.3.061.001:3:001. 4 B. I. S.
Guide for preparation of diagrams, charts & tables for electrotechnology, Part 1:definitions and classification
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621.3:066.78 B. I. S.
National electrical code
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