na INLIS000000000004196 20250804104730 250804||||||||| | ||| |||| || | 978-979-27-8360-5 010-0825004196 id 82-31 82-31 BOI t William Pene Du Bois Nin Bakdisoemanto The Twenty-One Balloons=21 Balon Udara Jakarta Elex Media Komputindo 2010 viii, 210 p.: ill.; 17 cm novel -- Fiksi