text Yogyakarta Kanisius 1988 Cet. 1. ind 96 hlm. : ilus. ; 26 cm. Astronomi 201102010812304 YOGYA-02110000000115 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)