Polski Konstrukcje Lotnicze Tom 4 cz-1 (Polish Aircraft designs until 1939 part 4 vol1 )

Volume 4 describing all Polish Aircraft designs up till 1939 in depth with drawings and pictures.
A detailed photo album of Polish Air Force aircraft and equipment during September 1939. The book contains previously unpublished photos taken by German soldiers during the invasion of Poland. A fascinating and unparalleled view of Polish military aviation and its aircraft, as seen through the lenses of the best photographic equipment of 1939!