Verlag: Published by the Institute of Navigation, Los Angeles, California. Volume 6, Number 2.
Erstausgabe
Soft cover. Zustand: Very Good. No Jacket. 1st Edition. Very good condition. Spine tips and spine edges are rubbed. Light crease near top corner of back cover. 58 pages. Articles include Polar Route Navigation, Antarctica, Harold Gatty As We Knew Him, etc.