RT Journal Article SR Electronic T1 meta Substituted N-ethylamphetamine self injection responding in the rhesus monkey: structure-activity relationships. JF Journal of Pharmacology and Experimental Therapeutics JO J Pharmacol Exp Ther FD American Society for Pharmacology and Experimental Therapeutics SP 274 OP 281 VO 205 IS 2 A1 R E Tessel A1 J H Woods YR 1978 UL http://jpet.aspetjournals.org/content/205/2/274.abstract AB