Wagner, Edmund G.
Excreta disposal for rural areas and small communities / Textual Documents Edmund G Wagner. - 1958 / . - Geneva : World Health Organisation , 1960. - 187 ; .
363.728 / WAG/EX
Excreta disposal for rural areas and small communities / Textual Documents Edmund G Wagner. - 1958 / . - Geneva : World Health Organisation , 1960. - 187 ; .
363.728 / WAG/EX