na NUTBA000000000005260 20141027104458.0 978-979-18113-1-6 0010-101400000000490 NBPDMAT 551.21 551.21 Pur a Purwanto Awas gunung api / Purwanto ; editor, Safrizar Cet.2 Jakarta : Pustaka Utama Grafiti, 2010 vi, 39 hlm. : ilus. ; 24 cm. Gunung Berapi Safrizar NBPDMAT