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035   $a(OCoLC)935499418
035   $a(EXLCZ)995470000002476482
100   $a20160121d1981      ua             0
101 0 $aeng
181   $2rdacontent
182   $2rdamedia
183   $2rdacarrier
200 13$aAn approximate expression for the principal beamwidths of directive antennas in terms of aperture fields /$fArthur D. Yaghjian
210  1$aGaithersburg, MD :$cU.S. Dept. of Commerce, National Institute of Standards and Technology,$d1981.
215   $a1 online resource
225 1 $aNBSIR ;$v81-1644
300   $a1981.
300   $aContributed record: Metadata reviewed, not verified. Some fields updated by batch processes.
300   $aTitle from PDF title page.
320   $aIncludes bibliographical references.
700   $aYaghjian$b Arthur D$028226
701   $aYaghjian$b Arthur D$028226
712 02$aUnited States.$bNational Bureau of Standards.
801  0$bNBS
801  1$bNBS
801  2$bGPO
906   $aBOOK
912   $a9910710280203321
996   $aAn approximate expression for the principal beamwidths of directive antennas in terms of aperture fields$93532873
997   $aUNINA