Ward,John F <br/>
       Note on helicopter  rotor-blade fatigue-crack propagation rates under equivalent-lifetime fatigue loadings[NASA TN D -1018] 
 / John F Ward 
 .- Washington, D.C.: National Aeronautics and Space Adminstration,  1962 
 .- 10p. 
.- ( National Aeronautics and Space Adminstration NASA technical note    
<br/>Bound vol. contains D 1011-1020 
<br/><u>Subject Headings:</u> <br/>Helicopter rotor-blade;
<br><U>Copy Details:</u><br> Acc. No.: <b>TR10375</b>, Full Call No.: ,   Item type:  Technical Report , Location: COMPACT STORAGE (BASEMENT), NASA TN D 1011-1020<br><b>------------------------- --------------------- ------ --------- ------- ------- --------- -------- </b><br>