Christ, Wolfgang
Aspects of water pollution control : a selection of papers prepared for the Conference on Water Pollution Problems in Europe, Geneva, 1961 / Wolfgang Christ...[et al.]. - Geneva : World Health Organization, c 1962. - 115 p . ; ill. ; 22 cm.
331 331
Water -- Pollution.
Pollution
628.168 / G893a
Aspects of water pollution control : a selection of papers prepared for the Conference on Water Pollution Problems in Europe, Geneva, 1961 / Wolfgang Christ...[et al.]. - Geneva : World Health Organization, c 1962. - 115 p . ; ill. ; 22 cm.
331 331
Water -- Pollution.
Pollution
628.168 / G893a