So︠t︡sialʹnye problemy podgotovki i truda molodogo popolneni︠i︡a rabochego klassa - Filippov, Fridrikh Rafailovich; Malova, V. A.; Orekhova, I. M. (In-t so︠t︡siologicheskikh issledovaniĭ AN SSSR, 1986)