Obshchestvenno neobkhodimye zatraty truda i tseny

N. I͡A.(Nikolaĭ I͡Akovlevich) Petrakov, L. P. Egorova, Institut ėkonomiki (Akademii︠a︡ nauk SSSR). Otdel obshchikh problem politicheskoĭ ėkonomii sot︠s︡ializma, A. A. Denisova