Holm, Raymond G. <br/>
       Acoustic radiation patterns for a source in a hard walled unlanged circular duct [NASA TN D-7360] 
 / Raymond G. Holm and William E. Zorumski 
 .- Washington,/D.C.: National Aeronautics and Space Administration,  1973 
 .- 18p. 
<br/><u>Subject Headings:</u> <br/>Radiation;
<br/><U>Author Added Entry: </u><br/>Zorumski, William E.;
<br><U>Copy Details:</u><br> Acc. No.: <b>101324</b>, Full Call No.: ,   Item type:  Technical Report , Location: COMPACT STORAGE (BASEMENT), <br><b>------------------------- --------------------- ------ --------- ------- ------- --------- -------- </b><br>