Nieberding, William C. <br/>
       Modified Vibration transducer calibration system which dirctly yields a plot of sensitivity versus frequency [NASA TN D-4760] 
 / Wlliams C. Nieberding, Edward F. Miller, and David L. Wright 
 .- 15p. 
.- ( National Aeronautics and Space Administration(NASA)   
<br/><u>Subject Headings:</u> <br/>Transducer;