text Yogyakarta Gadjah Mada University Press 1992 I x, 657 hlm. 28 cm ekologi 574.5 574.5 Odu e 9794202568 INLIS000000000002963 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)