text Yogyakarta Citra Offset 1981 Ed. 1 ind viii, 269 hlm 24 cm Wardiman Persamaan diferensial 513.7 979-756-168-6 20161117125156.0 INLIS000000000024194 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)