Ganczarczyk, Jerzy J., 1928- Activated sludge processes theory and practice Jerzy J. Ganczarczyk - New York Marcel Dekker c1983 - v, 270 p. ill. 24 cm. - Pollution engineering and technology 23 . Subjects--Topical Terms: Sewage--Purification--Activated sludge process Dewey Class. No.: 628.3 / 54