[Effect of waterworks reconstruction on the parasitological situation in the USSR].
D000818:Animals; D004197:Disease Reservoirs; D004199:Disease Vectors; D004463:Ecology; D006801:Humans; D010272:Parasitic Diseases / Q000453:epidemiology* / Q000635:transmission; D012498:Sanitary Engineering; D014586:USSR; D014881:Water Supply
Vliianie rekonstruktsii vodnogo khoziaĭstva na parazitologicheskuiu situatsiiu v strane.