Timbul Sugihartono text Klaten Saka Mitra Kompetensi 2013 Ilus ; 21 cm Timbul Sugihartono Biogas 665.776 665.776 TIM m 9781136617 220620 20220620021956 INLIS000000000032709 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)