na INLIS000000000004269 20150929103308.0 9789790332553 010-091500000001374 [21] 926 926 HEL b Heller,Robert BIL GATES Jenius Revolusi Software dan Master Abad Informasi Erlangga 2008 112 hlm. ; ilus. 21 cm. Indeks : hlm. 110-111 tokoh bidang teknologi Editor : Ratri Medya 16098(21502)/PU-KDR/HD/2009