The National Geographic Magazine. Vol LV. No 4, April 1929 [and] No 5, May 1929 [and] No 6, June 1929
National Geographic, 1929.
Brown binder's cloth a little rubbed; hinge opening after first page; a very good copy.
Not least, Siepen on gliding in Germany (pp 751-780). The secret rise of the Luftwaffe.
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