000			00874nam a2200265Ia 4500
003			HQRS
005			20180906024527.0
008			150617s2014 xx 000 0 eng d
040			_aHQRS _beng _cHQRS
041			_heng
110			_aNational Physical Laboratory
111			_cCalcutta, _dFeb.23, 1972
245			_aSymposium on role of troposphere on radio communication
260			_aNew Delhi: _bNational Physical Laboratory, _c1972
300			_a110p.: _bill.; _c23cm.
500			_aIncludes bibliographical references
650			_aTroposphere
650			_aTropospheric radio wave propagation
650			_aAtmospheric radio refractivity
650			_aAtmospheric radio refractivity _xCharts, diagrams, etc.
650			_aTropospheric radio wave propagation
650			_aTroposhere _xRadiocommunication
365			_aINR _bComp.
942			_2udc _cBK
999			_c10650 _d10650