TY - JOUR T1 - Discriminative stimulus effects of naltrexone in narcotic-naive and morphine-treated pigeons. JF - Journal of Pharmacology and Experimental Therapeutics JO - J Pharmacol Exp Ther SP - 307 LP - 313 VL - 224 IS - 2 AU - R J Valentino AU - S Herling AU - J H Woods Y1 - 1983/02/01 UR - http://jpet.aspetjournals.org/content/224/2/307.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -