na INLIS000000000018000 20130516042012 ind 979-781-529-3 0010-051300000018000 ind 633.6 633.6 Wolfgang, Metzger Udara.Angin & Penerbangan c.1 / editor, Umi, Andriani; penerjemah, Ratna T., Sinaga Cetakan : 2 Jakarta Erlangga for Kids 2008 15 hlm. : ilus. ;29 cm. Penerbangan