Airplane airworthiness ...
Publisher: U.S. Govt. print. off.
Published: 1938
Place of publication: Washington, D.C
Language: eng
Notes: At head of title: U.S. Dept. of commerce. Daniel C. Roper, Secretary. Bureau of air commerce, Denis Mulligan, Director.

"Air commerce manual. 04."

Reproduced from typewritten copy.

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