Biological toilets - a solution to pollution problems

by Ove Molland ...[et al.]
Bok · Engelsk · 1983

Utgitt	[s.l.] : Agricultural Research Council of Norway : GEFO , 1983
Omfang	18 s.
Opplysninger	På forsiden: "Prepared for the United Nations Commission for Human Settlement 6th session, 1983