na YOGYA000000000048916 20180830100152 0010-081400000048634 L 973 ENG c The Challenge of diversity / by Richrard E. Engler, Jr New York : Harper & Row, publisher, 1964 xiv, 338 halaman : ilustrasi ; 21 cm 180830 g 0 eng 973 973 ENG c Engler, Richard E JKPNPNA ind YOPDYOG YOPDYOG eng Indeks Amerika Serikat - Sejarah Amerika Serikat - Keadaan sosial Bibliografi : hlm. 315-323 8630-a 8630-a