Indonesia. Depdikbud text Jakarta Balai Pustaka 1983 Cet. 1 ind 81 hlm ilus 21 cm Depdikbud Bibliografi : hlm. 79 Teknologi - Penelitian 600.72 20090227025024.0 YOGYA-02090000035534 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)