[Experience in the use of punched cards in studying the sanitary conditions of discharge of sewage into water reservoirs].
D011676:Punched-Card Systems; D012498:Sanitary Engineering; D012722:Sewage; D014586:USSR; D014876:Water Pollution
D012722:Sewage
Opyt primeneniia perfokart pri izuchenii sanitarnykh usloviĭ spuska v vodoemy stochnykh vod.