Bankaitis, H. Asridi oxygen technology survey; vol.2 : - Washington D C : National Aeronautics and Space Administration, 1972. - 2 v (v, 76 p. :) ill. ; 26 cm. - NASA SP 3072 . Includes bibliographical references. Subjects--Topical Terms: Oxygen PurificationAerospace engineering Safety measuresInterlaboratory verification Dewey Class. No.: 623.31 BAN