000			00317pam a2200133a 44500
082			_aNASA _bTN D-490
100			_aO'Keete,J A
245	1		_aTHE ORIGIN OF TEKTITES
260			_a _bNasa, Washington, D.C. _c1960
300			_a26
500			_aBound With Nasa Tn D-481-489.
964			_gCIRC
997			_aTR16159 C
999			_c401461 _d401461