000			003330000a22001330004500
245			_aAmateur radio equipment fundamentals
100			_aHelfrick, Albert D.
260			_aEnglewood Cliffs _bPrentice Hall _c1982
300			_axii, 284p. : ill.
020			_a0130236551
080			_a621.396 _bH4
041			_aEN
942			_cBK
999			_c119188 _d119188