text Jakarta Obor Indonesia 1981 Cet. 1 ind xxxiv, 310 hlm ilus 21 cm Paul R. Ehrlich ; penterjemah, Mokhtar Pabotinggi Penghasilan 339.2 20090227022507.0 YOGYA-02090000015090 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)