International encyclopedia of the social sciences / [print] David L. Sills, editor. - [New York] : Macmillan ; (c)1968-1979. The Free Press, (c)1968-1979. - 18 volume : illustrations ; 29 cm. Vol. 18 has subtitle: Biographical supplement. LCCN: 68010023 //r902 Subjects--Topical Terms: Social sciences--Dictionaries. LC Class. No.: H40.I61.I584 1968