RECENT MON'oaUAIMlS 1203 



Lander, J. J. 



Auger Peaks in the Energy Spectra of Secondary Electrons from 

 Various Materials, Monograph 2215. 



Lewis, \\'. D 



Electronic Computers and Telephone Switching, Aloiiograiih 2187. 



LiNVILL, J. G. 



A New RC Filter Employing Active Elements, Monograph 2221. 



May, J. E. 



Characteristics of Ultrasonic Delay Lines Using Quartz snd Barium 

 Titanate Ceramic Transducers, Monograph 2223. 



McSkimin, H. J. 



Measurement of Elastic Constants at Low Temperatures by Means 

 of Ultrasonic Waves Data for Silicon and Germanium Single Crystals 

 and for Fused Silica, Monograph 2171. 



MoRiN, F. J., see Burton, J. A. 



Pennell, E. S. 



A Temperature-Controlled Ultrasonic SoUd Delay Line, Monograph 

 2222. 



Pfann, W. G. 



Change in Ingot Shape During Zone Melting, Monograph 2218. 



Pierce, J. R. 



Spatially Alternating Magnetic Fields for Focusing Low-Voltage 

 Electron Beams, Monograph 2169. 



Potter, J. L., see Felch, E. P. 



Prim, R. C., see Burton, J. A. 



