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.

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.

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.