TY JOUR TI Efficiency of biopreparations based on strains of nitrogen-fixing bacteria in the productivity of alfalfa in the conditions of Central Yakutia KW alfalfa KW inoculation KW strains KW nodule bacteria NB KW associative rhizobacteria ARBC KW yield. JO INTERNATIONAL AGRICULTURAL JOURNAL AU Yakovleva, M.. PY 2018 IS 1 PB Electronic science