@article{34585, author = "United Nations regional cartographic conference for Africa, second : 14 - 24 september 1966, Tunis, Tunisia", title = "United Nations regional cartographic conference for Africa, second: 14 - 24 september 1966, Tunis, Tunisia. Vol. 2 : Proceedings of the conference and technical papers ", year = "1967", note = "UN - Econom. Commiss. for Africa. - Lit. - Summ. - 1 sv.", }