книга Sailplanes 1920-1945 бесплатно скачать

Sailplanes 1920-1945 бесплатно: This book, Volume 1 of a projected series, describes and illustrates more than 120 types of sailplane, designed, built and flown in many countries during the quarter century following the first organized gliding competition on the Wasserkuppe in 1920. The astonishing achievements of designers and builders, lacking modern materials and production methods, and the flights made by the pilots of those times, deserve to be recorded and remembered.