000 00230nam a2200073 4500
080 _a
_b
245 _aIS: 1885 (Part XX) - 1967 : Electrotechnical Vocabulary Part 20 Radiowave Propagation
700 _aINDIAN STANDARDS INSTITUTION
260 _aNew Delhi
_bBIS
_c1968
300 _a21p
999 _c25524
_d25524