pencemaran air dan pencegahan text Jakarta Grasindo 1997 ind ix, 86 hlm ilus 18 cm Mangku Sitepu; editor Djony Herfan Bibliografi : hlm. 79-83 Air - Pencemaran 628.16 &a979-669-157-4 20090227024300.0 YOGYA-02090000028982 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)