text Jakarta Sinar Grafika 1989 Cet. 1 ind 204 hlm ilus 21 cm John Salindeho Bibliografi : hlm. 201-203 Ekologi - Undang-undang 20090227024141.0 YOGYA-02090000027503 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)