Title: Vsesoi͡uznai͡a konferent͡sii͡a Pochvenno-agrokhimicheskie i ėkologicheskie problemy formirovanii͡a vysokoproduktivnykh agrot͡senozov
Subjects: Agricultural chemistry, Agricultural productivity, Congresses, Environmental aspects of Agricultural chemistry, Environmental aspects of Agricultural productivity, Environmental aspects of Soil fertility, Soil fertility