Parkar, Lee W. Theory of Ion collection in the D-region by a rapidly moving blunt probe or mass spectrometer / by Lee W. Parkar - Washington, D.C. : U.S. Government Printing Office, 1974 - 117 p. : fig. ; 26 cm. - NOAA technical report ERL ; 311-AL 10 . Subjects--Topical Terms: Mass spectrometryHydrocarbons--Spectra Dewey Class. No.: 545.33082