GUPPOEV T.B., SHOGENOV M.Z. STATE SOCIAL SERVICES: FROM EVOLUTION OF THEORY TO THE PRACTICE OF QUALITY ASSURANCE // Gosudarstvennaya Sluzhba. 2019. Vol. 21, no. 4. P. 75–81. https://doi.org/10.22394/2070-8378-2019-21-4-75-81