text London: Institution of Electrical Engineers, c1968 Eng vii, 251 hal. : ilus. ; 30 cm. vii, 251 hal. : ilus. ; 30 cm. London: Institution of Electrical Engineers, c1968 Tropospheric radio wave propagation R 621.381 31 Con c R 621.381 31 Con c INLIS000000000037161 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)