Three papers discussing Kalecki's concepts. The first five-page paper describes the basic elements of Kalecki's growth model and its socio-economic characteristics. The second six-page paper discusses balanced growth and the problem of effective demand in a socialist and capitalist country. The third fourteen-page paper discusses the essence of Kalecki's technical progress concept for the socialist economy. This paper forwards technical progress in Kalecki's terms and thus shows its significance to the socialist economy. 25 pgs. 73 f/c. 7b.