na INLIS000000000010519 20231202142323 231202||||||||| | ||| |||| || | 010-1223010519 id 538.2 538.2 LAN m Lang, Johannes G. Medan magnet Cet.1 Jakarta Katalis 1986 67 hlm. : ilus. ; 21 cm. R20.04 - R20-0074 Magnet