@misc{Polish_Ministry_of_Industry_Commerce_and_Shipping_Aeronautical_Department_Poland's,
 author={Polish Ministry of Industry, Commerce and Shipping Aeronautical Department},
 howpublished={online},
 language={eng},
 type={book},
 title={Poland's possible contribution to future air transport},
 keywords={air transport, trade, Poland, 1900-1945},
}