Tschannerl, G. (1971). Water supply: Proceedings of the Conference on Rural Water Supply, 5-8 April 1971, University of Dar es Salaam, Tanzania. Dar Es Salaam: University of Dar es Salaam.
Παραπομπή Chicago StyleTschannerl, Gerhard. Water Supply: Proceedings of the Conference On Rural Water Supply, 5-8 April 1971, University of Dar Es Salaam, Tanzania. Dar Es Salaam: University of Dar es Salaam, 1971.
Παραπομπή MLATschannerl, Gerhard. Water Supply: Proceedings of the Conference On Rural Water Supply, 5-8 April 1971, University of Dar Es Salaam, Tanzania. Dar Es Salaam: University of Dar es Salaam, 1971.
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