na INLIS000000000010249 20231202142238 231202||||||||| | ||| |||| || | 010-1223010249 id 538.2 538.2 MAG Amin, Hasan Magnetisme Jakarta Balai Pustaka 1977 30 hlm. : ilus. ; 21 cm. R20.04 - R20-0071 Magnet