1226 THE BELL SYSTEM TECHNICAL JOURNAL, SEPTEMBER 1956 



Harrower, G. A.^ 



Dependence of Electron Reflection on Contamination of the Reflect- I 

 ing Surface, Phys. Kev., 102, pp. 1288-1289, June 1, 1956. 



Howard, J. D., Jr.^ 



Application of the Type-Pl Carrier System to Rural Telephone Lines, 

 A.I.E.E. Commun. and Electronics, 24, pp. 205-21-1, i\Iay, 1956. 



HuTSON, A. R} 



Effect of Water Vapor on Germanium Surface Potential, Phys. Rev., 

 102, pp. 381-385, Apr. 15, 1956. 



Katz, D.^ 



A Magnetic Amplifier Switching Matrix, A.I.E.E. Commun. and Elec- 

 tronics, 24, pp. 236-241, May, 1956. 



KowALCHiK, M., see Trumbore, F. A. 



Law, J. T.,1 and Garrett, C. G. B.^ 



Measurements of Surface Electrical Properties of Bombardment- 

 Cleaned Germanium, J. Appl. Phys., 27, p. 656, June, 1956. 



Lewis, H. W.^ 



Two-Fluid Model of an "Energy-Gap" Superconductor, Phys. Rev., 

 102, pp. 1508-1511, June 15, 1956. 



Logan, R. A., see Thurmond, C. D. 



LOZIER, J. C.^ 



A Study State Approach to the Theory of Saturable Servo Systems, 

 LR.E. Trans., PGAC, 1, pp. 19-39, 1956. 



LuNDBERG, J. L.,^ and Zimm, B. H.^ 



Sorption of Vapors by High Polymers, J. Phys. Cheni., 60, pp. 425- 

 428, Apr. 16, 1956. 



Matthias, B. T.,^ and Remeik.\, J. P.^ 



Ferroelectricity in Ammonium Sulfate, Phys. Rev., Letter to the 

 Editor, 103, p. 262, July 1, 1956. 



^ Bell Telephone Laboratories Inc. 



2 American Telephone and Telegraph Company, Inc. 



* General Electrical Research Laboratories. 



