Bikin sendiri radio transceiver dengan gelombang cahaya infra merah text Solo Aneka 1991 ind 167 hlm ilus 21 cm Rm. Francis D. Yury Bibliografi : hlm. 167 Radio - Alat Pengiriman dan penerima 621.3841 20090227022947.0 YOGYA-02090000019249 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)