1. [Sanitary toxicological evaluation of the activated sludge from a pulp-and-paper combine as fertilizer for soils in the nonchernozem belt]. Author Seliuzhitskiĭ GV, Ivanova NA, Zubets TP, and Baranova LN Subjects Biodegradation, Environmental, Soil Pollutants, Water Pollutants, Chemical, Cellulose, Fertilizers toxicity, Paper, Soil Published 1979