TY JOUR TI ASSESSING SAPROPEL RAW MATERIALS FROM LAKE DEPOSITS OF THE SAKHA REPUBLIC KOBYAI ULUS (YAKUTIA) AND ITS PROSPECTS USE IN AGRICULTURAL PRODUCTION KW Sapropel KW lakes KW chemical composition KW macronutrients KW trace elements KW sideral-sapropel fertilizers KW Yakutia JO Bulletin of KSAU AU Slepcova, T.. AU Abramov, A.F. PY 2022 IS 0 PB Krasnoyarsk State Agrarian University