Fifteen papers were translated: On the removal of impurities from the atmosphere by clouds and precipitation; Some aspects of the adoption of automatic methods of determining atmospheric pollutants; Recording of sulfur dioxide content at the outskirts of a city. Comparison of measurement results for a valley and an elevation; Theoretical and Experimental study of the aspiration coefficient of aerosols; Mechanism of photochemical pollution of the urban atmosphere; Procedure for determining the content of trace elements in precipitated water; Content of heavy metals in the air of certain regions of the USSR; On the design of a measuring network for air pollution in the German Democratic Republic; Content of photooxidants in urban air; Study of air pollution and atmospheric precipitation resulting from artificial modification of clouds; Microclimate characteristics and hygienic evaluation of the relative emplacement of industrial and residential complexes in the regions of Siberia; Numerical characteristics of meteorological conditions associated with periods of heavy atmospheric pollution in western Siberia; Experience in simulating the propagation of noxious substances in the surface atmospheric layer over plant sites and surrounding grounds; Special cases of Vertical currents; and Synoptic conditions of formation of a very stable atmospheric boundary layer. (Author/RH)