TY - BOOK ID - 134302056 TI - Astronomical navigation : a handbook for aviators PY - 1942 PB - London : Longmans, Green and Co., DB - UniCat KW - Navigation (Aeronautics) KW - Navigation (Aéronautique) UR - https://www.unicat.be/uniCat?func=search&query=sysid:134302056 AB - ER -