na INLIS000000000005997 20150428082206.0 150428 2006 jkia g f ind 979-744-477-5 010-041500000000338 [22] 600 600 Eka m EKA, Purjiyanta Model teknologi sederhana / Eka Purjiyanta Jakarta : AZKA Press, 2006 106 hlm. : ilus. ; 20 cm Bibliografi : hlm 106 SAINS-TEKNOLOGI SUPUDES