text Yogyakarta Universitas Gadjah Mada 1974 Ind [3], iii, 62 p. [3], iii, 62 p. ills. Purwosubagyo, W.; Abdurrohman 378.963(922.227.1) INLIS000000000015406 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)