U. S. DEPARTMENT OF COMMERCE 

 ENVIRONMENTAL SCIENCE SERVICES ADMINISTRATION 



A World Atlas of 

 Atmospheric Radio Refractivity 



B. R. Bean, B. A. Cahoon, C. A. Samson, and G. D. Thayer 



Institute for Telecommunication Sciences and Aeronomy 



Institutes for Environmental Research 



Boulder, Colo. 



ESSA Monograph 1 



UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1966 



