000			00459cam a22001571 4500
005			20160318124954.0
008			750905s1952 xx 000 0 eng
082			_a621.3841 _bRAT
100	1		_aRatcliffe, J. A. _94108
245	1	4	_aThe physical principles of wireless. _cWith a foreward by Sir E. V. Appleton.
250			_a[9th ed., rev.]
300			_a109 p. _billus. _c18 cm.
653			_aRadio
942			_cBK
260			_aLondon, _bMethuen; _c[1952]
999			_c150311 _d150311