RT Journal Article SR Electronic T1 Mechanism of pulmonary absorption of quaternary ammonium compounds in the rat. JF Drug Metabolism and Disposition JO Drug Metab Dispos FD American Society for Pharmacology and Experimental Therapeutics SP 73 OP 74 VO 11 IS 1 A1 J A Hemberger A1 L S Schanker YR 1983 UL http://dmd.aspetjournals.org/content/11/1/73.abstract AB