BTS  / MONO 2291 <br/>
Clark,M A <br/>
       ACOUSTIC LENS AS A DIRECTIONAL MICROPHONE 
 / 
 .-  ,  1954 
 .- 2 . 
<br/>Bound With Bts Mono 2279-2290,2292-2299 Lack No.2292,2296 
<br><U>Copy Details:</u><br> Acc. No.: <b>TR19581</b>, Full Call No.: BTS MONO 2291,   Item type:  Technical Report , Location: General Stacks, <br><b>------------------------- --------------------- ------ --------- ------- ------- --------- -------- </b><br>