LEADER 01420nam  2200421Ia 450 
001 9910697105103321
005 20230902162214.0
035   $a(CKB)5470000002385866
035   $a(OCoLC)748561163
035   $a(EXLCZ)995470000002385866
100   $a20110831d1975      ua             0
101 0 $aeng
135   $aurbn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aRefractivity gradients in the Northern Hemisphere$b[electronic resource] /$fC.A. Samson
210  1$a[Washington, D.C.] :$cU.S. Dept. of Commerce, Office of Telecommunications,$d[1975]
215   $a1 online resource (iii, 121 pages) $cillustrations
225 1 $aOT report ;$v75-59
300   $aTitle from title screen (viewed on Aug. 31, 2011).
300   $a"April 1975."
320   $aIncludes bibliographical references (pages 15-16).
410  0$aOT report ;$v75-59.
606   $aAtmospheric radio refractivity
606   $aRawinsondes
606   $aRefraction
615  0$aAtmospheric radio refractivity.
615  0$aRawinsondes.
615  0$aRefraction.
700   $aSamson$b C. A$01408536
712 02$aUnited States.$bDepartment of Commerce.$bOffice of Telecommunications.
801  0$bGPO
801  1$bGPO
906   $aBOOK
912   $a9910697105103321
996   $aRefractivity gradients in the Northern Hemisphere$93492695
997   $aUNINA