World Filtration Congress ; 5
[Kongress] ; 5 [Kongress] ; 5 (Nice) : 1990.06
1990
Digital preservation by Technische Informationsbibliothek (TIB) / Leibniz-Informationszentrum Technik und Naturwissenschaften und Universitätsbibliothek
Conference Proceedings
Unknown
British Library Conference Proceedings | 2004
Third World Petroleum Congress
Engineering Index Backfile | 1951
Verslag van het 'Third slow sand alternative biological filtration congress'
British Library Online Contents | 1996
Proceedings - World Buffalo Congress
Catalogue agriculture | 2.1988