000			00439pam a2200145a 44500
082			_aARC _bR&M 1727
100			_aBeavan,J A
245	1		_aTHE EFFECT OF BLACK TWIST ON THE CHARACTERISTICS OF THE C.30 AUTOGIRO
260			_a _bHer Majesty'S Stationery Office, London _c1936
300			_a28
500			_aBound With Arc R&M1702-13,1746 Lack No.1703-12,1714-26,1728-45
700			_aLock,C N.H
964			_gCIRC
997			_aTR17130 C
999			_c402335 _d402335