The aviation pocket-book for 1918; a compendium of modern practice and a collection of useful notes, formulae, rules, tables and data relating to aeronautics (1918)
Matthews, Richard Borlase, 1878- · London : C. Lockwood and son · leaf 412
l as the national emblems, the machinesusually carry a number and class mark to indicate the service uponwhich they are engaged. Experiments are being made to obtain paint colours that makean aercjplane on the ground as invisible as possil)le from an aeroplaneoverhead. Similarly, it would be… … (navy alternative) FRANCE , BELGIUM, SERBIA ^ ROUMANIA.
Aeronautics
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