na INLIS000000000017099 20190502204109 190502||||||||| | ||| |||| ||ind|| 978-979-44 010-0519017099 ind 363.73.PUR.a 363.73.PUR.a PUR a Purwanto Awas polusi Edisi cet.1 Jakarta Pusataka Utama Grafiti 2007 66 hlm. ilus. Pencemaran