TY  - BOOK
AU  - Boothby, F. L. M. 
ED  - Institution of Aeronautical Engineers
TI  - Commercial airship design / 
PY  - 1924///?]
CY  - London : 
PB  - Institution of Aeronautical Engineers, 
KW  - ტრანსპორტი
KW  - საჰაერო ტრანსპორტი
N1  - Published in no. 13 of the Minutes of proceedings of the Institution
ER  -