ceramah text Jakarta Yayasan Idayu 1976 Cet. 2 ind 44 hlm ilus 21 cm T.B. Simatupang Bibliografi : hlm. 39-42 Ketahanan nasional 20090227023621.0 YOGYA-02090000022176 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)