na INLIS000000000017221 20150112173615.0 978 979 29 2481 7 0010-011500000009994 0014 Sudaryono - Suryo guritno - Untung rahardjo theory and application of it research/ metodologi penelitian teknologi informasi 1 Yogyakarta Andi offset 2011 x, 358 hlm, 23 cm 11683 11683