00000cam a22000004a 4500 UP-99796217607079861 Buklod 20230503092542.0 a r |||| u| ta 030101s1981 xx r |000 u|eng d 0-88936-293-9 (iLib)UPD-00000443354 TD 153 S26 Sanitation in developing countries proceedings of a workshop on training held in Lobatse, Botswana, 14-20, August 1980. Ottawa International Development Research Centre 1981 172 p.: ill., tables; 25 cm. IDRC-168e Developing countries--Sanitary engineering--Congresses. Book UPD DPOP TD 153 S26 Book