Direktorat Jenderal Ketenagaan text Jakarta Direktorat Jenderal Ketenagaan 1980 662 hal. : Ilus. ; 29 cm Energi non konvensional 620.9 210322 20210322160158 INLIS000000000002500 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)