TY - BOOK ED - Conference on Research in Income and wealth. TI - Problems of capital formation: concepts, measurement and controlling factors T2 - Report/National Bureau of Economic Research, New York U1 - 339 PY - 1957/// CY - [S.l.] PB - Princeton University Press KW - Saving and investment KW - Congresses N1 - stuides in income and wealth volume nineteen; Includes index ER -