LEADER 01957oam  2200457I  450 
001 9910705140003321
005 20140305150429.0
035   $a(CKB)5470000002447958
035   $a(OCoLC)727576043
035   $a(EXLCZ)995470000002447958
100   $a20110528d1960      ua             0
101 0 $aeng
135   $aurmn|||||||||
181   $2rdacontent
182   $2rdamedia
183   $2rdacarrier
200 10$aSupplementary world maps of F2 critical frequencies and maximum usable frequency factors /$fDonald H. Zacharisen
210  1$aWashington, D.C. :$cNational Bureau of Standards, United States Department of Commerce, Office of Technical Services,$d1960.
215   $a1 online resource (245 pages) $cchiefly illustrations, maps
225 1 $aNational Bureau of Standards technical note ;$v2-2
300   $aTitle from title screen (viewed Mar. 5, 2014).
300   $a"Boulder Laboratories"--Cover.
300   $a"October 1960."
300   $a"Prepared in response to Study program 60 and Recommendation 176 of the International Radio Consultative Committee (CCIR). This Technical Note supplements Technical Note 2 and together they present F2-layer prediction material for all months of the year."
320   $aIncludes bibliographical references (page 10).
606   $aIonospheric radio wave propagation$vCharts, diagrams, etc
606   $aF region$vCharts, diagrams, etc
615  0$aIonospheric radio wave propagation
615  0$aF region
700   $aZacharisen$b Donald H.$01390637
712 02$aUnited States.$bNational Bureau of Standards,
712 02$aBoulder Laboratories (U.S.),
712 02$aInternational Radio Consultative Committee,
801  0$bOCLCE
801  1$bOCLCE
801  2$bOCLCQ
801  2$bGPO
906   $aBOOK
912   $a9910705140003321
996   $aSupplementary world maps of F2 critical frequencies and maximum usable frequency factors$93443619
997   $aUNINA