Yekonomika, demografiya, statistika issledovaniya i problemy k 75-letiyu so dnya rozhdeniya chl. -kor. AN SSSR T. V. Ryabushkina [redaktsionnaya kollegiya V. Ye. Aperyan . [yet al. ]]. - Moskva : "Nauka", 1990. - 318 p. : ISBN: 5020134015 Subjects--Topical Terms: Economic history Dewey Class. No.: 330.947 / Ek