- Theoretical Study Concerning the Dynamic Performances of the Complex Units for Airport Runways Maintenance GBP 11.00
- The Necessity For Rotational Movement Of Valve And Tappet In Internal Combustion Engines GBP 11.00
- Study Of Aicraft Superior Class Tire-pavement Of Runway and Movement Surface GBP 11.00
Subtotal (excluding shipping and tax) GBP 33.00