Tyurin, A. 2022. PREDICTORS OF WORKERS’ PROTEST IN THE USSR AT THE END OF THE 1920S – THE BEGINNING OF THE 1930S: SOCIAL IDENTITY AND SELF-EFFICIENCY (BY THE MATERIALS OF THE LOWER VOLGA REGION). Russian Social and Humanitarian Studies. 14, 1 (Mar. 2022), 14-36. DOI:https://doi.org/10.12731/2077-1770-2022-14-1-14-36.