000			00323pam a2200133a 44500
082			_aNASA _bCR-493
100			_a
245	1		_aINVESTIGATION OF NEW IONOSOUNDER TECHNIQUES
260			_a _bNasa, Washington, D.C. _c1966
300			_a163
500			_aBound With Nasa Cr-491-492
964			_gCIRC
997			_aTR12903 C
999			_c397524 _d397524