South African Bureau of Standards. (1964). Standard specification for wooden telephone and general purpose electric light poles. Council of the South Africa Bureau of Standards.
Chicago-čujuhus (17. p.)South African Bureau of Standards. Standard Specification for Wooden Telephone and General Purpose Electric Light Poles. South Africa: Council of the South Africa Bureau of Standards, 1964.
MLA-čujuhus (9. p.)South African Bureau of Standards. Standard Specification for Wooden Telephone and General Purpose Electric Light Poles. Council of the South Africa Bureau of Standards, 1964.
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