[Importance of biological studies for sanitary control of drinking water supply].
1970
H Heynig
UI
MeSH Term
Description
Entries
D005374
Filtration
A process of separating particulate matter from a fluid, such as air or a liquid, by passing the fluid carrier through a medium that will not pass the particulates. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Filtrations
D005859
Germany, East
The former German Democratic Republic which was reunified with the former Federal Republic of Germany in 1990.
Democratic Republic of Germany,German Democratic Republic,Germany, Democratic Republic of
D012621
Seasons
Divisions of the year according to some regularly recurrent phenomena usually astronomical or climatic. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
The presence of bacteria, viruses, and fungi in water. This term is not restricted to pathogenic organisms.
Microbiology, Water
D014881
Water Supply
Means or process of supplying water (as for a community) usually including reservoirs, tunnels, and pipelines and often the watershed from which the water is ultimately drawn. (Webster, 3d ed)