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12.1.051-90

. . 1000

: 12.1.051-90
:
.: . . 1000
.:Occupational safety standards system. Electrical safety. Distances of safety in the protective zone of power transmission lines for voltages above 1000 V
:01.07.1991
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  •  12.1.051-90
     12.1.051-90
     12.1.051-90
     12.1.051-90


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