Primary sources of energy.
- Geneva : International Telecommunication Union, 1970.
- 1 v. (loose-leaf) : ill.
At head of title: The International Telegraph and Teleophone Consulative Committee. (C.C.I.T.T.)
Electric power production.
At head of title: The International Telegraph and Teleophone Consulative Committee. (C.C.I.T.T.)
Electric power production.