Počet záznamov: 1
The international drinking water supply and sanitation decade
- The international drinking water supply and sanitation decade : review of regional and global data (as at 31 December 1983) - Geneva : World Health Organization , 1986 - 30 s. (WHO offset publication; No. 92) ISBN 92-4-170092-0 ISSN 0303-7878 [1, z toho voľných 1]
- Kapitoly, články
kniha
Počet záznamov: 1