text Jakarta Akadoma 1980 Cet.1 ind 150 hlm ilus 21 cm Azrul Azwar Bibliografi : hlm.157-159 Kesehatan lingkungan 20090227023512.0 YOGYA-02090000021151 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)