Mathematical planning of structural decisions / by János Kornai ; with contrib. by Thomas Lipták and Péter Wellisch ; [translated from the Hungarian by József Hatvany, Pál Morvay, György Hajdú]The economic mechanism in Hungary : how it works in 1976 / by O. Gadó ; [transl. by Gy. Hajdú]Reflections on the economic development of Hungary 1967-1973 / by Mátyás Timár ; translated by Gy. Hajdú ; translation rev. by G. DienesConsumption and price : with special regard to the theories and practice of the socialist countries / by Robert Hoch ; [translated from the Hung. by György Hajdu ; transl. rev. by András Bródy ; English language ed. Tom Ravensdale]Economic integration and economic strategy / Ferenc Kozma ; [transl. from the Hungarian by György Hajdú ; transl. revised by András Bródy]