XIV-2. U. S. HYDROGRAPHIC OFFICE. Technical specifications for 

 U. S. Navy surveys and supplementary data. Hydrographic 

 Office Publication No. 4. Washington. 146 p. 1953. 



XIV- 3. VARIAN ASSOCIATES. Operating and service manual: Proton 

 free precession airborne magnetometer, Model V-4910. [Palo 

 Alto, California] : Varian Associates. Instrument Division. 

 Various paging, [n.dj 



XIV- 1 2 



