Excreta disposal for rural areas and small communities /
Wagner, Edmund G.,
Excreta disposal for rural areas and small communities / Edmund g. Wagner, j. n. lanoix - 187 páginas - Monographs series / of the world health organization .
Letrinas
Alcantarillado rural
Eliminación de aguas residuales
TD929 / W24
Excreta disposal for rural areas and small communities / Edmund g. Wagner, j. n. lanoix - 187 páginas - Monographs series / of the world health organization .
Letrinas
Alcantarillado rural
Eliminación de aguas residuales
TD929 / W24