Ir. Supriyono, MS. text Ungaran PT.Trubus Agriwidya 1997 id viii+76 hlm 664.805 659 6 979-661-019-1 180916 20180916013546 INLIS000000000006206 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)