text Jakarta Penebar Swadaya 1999 Cetakan : 2 ind vi, 37 hlm. : ilus. ;21 cm. Biogas 665.776 979-489-330-7 20130515193334 INLIS000000000007661 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)