text Jakarta Penebar 1991 Cet. 4 ind 24 hlm ilus 21 cm Kusno S Ekologi 574.52 979-489-016-2 20090227024215.0 YOGYA-02090000028161 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)