text Surabaya Sinar Wijaya 1983 Cet. 4 ind iv, 120 hlm ilus 21 cm Nur Azman 1. Ilmu alam-gelombang bunyi 2. Soal jawab ilmu alam 530.1 YOPDYOG 20151023131440.0 YOGYA-02090000003228 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)