Détail du congrès:
Congrès: Third european Seminar for sanitary engineers, London, GBR, 27 October-1 November 1952 (1952; GBR) (1952) |
Congrès: Third european Seminar for sanitary engineers, London, GBR, 27 October-1 November 1952 (1952; GBR) (1952) |