Technology for water supply and sanitation in developing countries t report of a WHO Study Group
Card's contents:742. WHO Technical Report Series 201,637 TECHNOLOGY Technology for water supply and sanitation in developing countries : report of a WHO Study Group. -Geneva World Health Organization, 1987. - 38 s. / 20 cm. - (WHO Technical Report Series, ISSN 0512-3054 ; 742) ISBN 92-4-120742-6