na INLIS000000000000158 20251202094308 0010-1125000158 Ionosfir / R. Soegeng Soegeng, R. Yogyakarta : Andi Offset, 1994 979-533-212-0 251202 g 0 ind 538.7 538.7 SOE i Ionosfir Astronomi Atmosfer Geografi 0122/TP/15 0122/TP/15