text Yogyakarta Gadjah Mada University Press 1993 Cet. 4 ind x,150 hlm.: ilus.; 21 cm ekologi 20101005102013135 YOGYA-10100000002528 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)