text Jakarta Balai Pustaka 1978 Cetakan : 3 ind 88 hlm. ;21 cm. Pencemaran 641.7 20130516000317 INLIS000000000012586 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)