ARC  / R & M 3117 <br/>
W Stewart <br/>
       Helicopter behaviour in the vortex-ring conditions 
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<br><U>Copy Details:</u><br> Acc. No.: <b>TR16727</b>, Full Call No.: ARC R & M 3117,   Item type:  Technical Report , Location: General Stacks, <br><b>------------------------- --------------------- ------ --------- ------- ------- --------- -------- </b><br>