text Jakarta Gramedia 1980 ind xv, 139 p. : ill. ; : ill ; 21 cm Metode Penelitian Penelitian Masyarakat Penelitian Sosial 167.001 167.001 VRE m 250310 20250310110857 INLIS000000000004887 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)