Drinking-water and sanitation, 1981-1990 a way to health.

Drinking-water and sanitation, 1981-1990 a way to health.

सभी संस्करण दिखाएं (2)
ग्रंथसूची विवरण
निगमित लेखक: World Health Organization
स्वरूप: पुस्तक
भाषा:English
प्रकाशित: Geneva World Health Organization 1981.
विषय:
Drinking water > Health aspects > Developing countries.
Sanitary engineering > Developing countries.
Health planning > Developing countries.