%0 Journal Article %T ASSESSING SAPROPEL RAW MATERIALS FROM LAKE DEPOSITS OF THE SAKHA REPUBLIC KOBYAI ULUS (YAKUTIA) AND ITS PROSPECTS USE IN AGRICULTURAL PRODUCTION %A Slepcova, T.. %A Abramov, A.F. %K Sapropel, lakes, chemical composition, macronutrients, trace elements, sideral-sapropel fertilizers, Yakutia %J Bulletin of KSAU %D 2022 %N 0 %P 5 %I Krasnoyarsk State Agrarian University