Sumantri Praptokusumo penulis text jki Jakarta Pustaka Rakjat 1956 ind 160 halaman ; 22 cm Sumantri Praptokusumo Masalah sosial 361 361 SUM f YOPDYOG 090227 20210929094938 YOGYA-02090000003735 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19) ind