01084nam a2200289 4500 2433827 20150522150441.0 000 000 87890021 088936155X UOEL DLC DLC TD920 .R92 1978 Rybczynski, Witold. Low-cost technology options for sanitation [microform] : a state-of-the-art review and annotated bibliography / Witold Rybczynski, Chongrak Polprasert and Michael McGarry. [Ottawa, Canada : International Development Research Centre, c1978. 184 p. : ill. ; 25 cm. IDRC ; 102e Microfiche. Ottawa, Canada : International Development Research Centre, 1978. 2 microfiches ; 11 x 15 cm. Low cost technology Environmental technology Polprasert, Chongrak. McGarry, Michael. International Development Research Centre (Canada) IDRC (Series) ; 102e. 7 cbc orignew u ncip 19 y-genmicro lcc LL 8425 8425 0 0 lcc 0 0 UOE UOE GEN 2015-05-22 0 TD920 .R92 1978 20045342 2015-05-22 00:00:00 20045342 2015-05-22 LL