na INLIS000000000032995 20160219095448.0 $a 978-979-021-457-6 $0010-021600000000777 $a R 031 YAN e C.1 $a R 031 YAN e C.1 $a A. Yanuar $a Ensiklopedia Teknologi Lingkungan $a Semarang $b PT. Bengawan Ilmu $c 2008 $a Arpus Kab. Magetan $a 51.737