= 16 - 
BIBLIOGRAPHY 
Cooper, B. F. "A Narrow Beam Recording Altimeter for Topographic 
Survey", National Research Council, Ottawa, 
October, 1947 
Jowitt, S. "Levelling by Radar Altimeter", Engineering Journal, 
É.I.C., vol. 33, No. 8, August, 1950 
Kelsh, Harry T. "Report on Airborne Profile Recorder", Photo- 
grammetric Engineering, vol. XVIII, No. 1, March, 
1952 
McCaffrey, B. I. "The Airborne Profile Recorder", Photogrammetric 
Engineering, vol. XVI, No. 5, December, 1950 
McCaffrey, B. I. "A Pressure-height Corrector for Radar Altimetry", 
National Research Council, Ottawa, September, 1948 
Trorey, Lyle G. "Operational Methods of Mapping with Sparse Ground 
Control", Photogrammetric Engineering, vol. XVI, No. 1 
Marçh, 1950