RT Journal Article SR Electronic T1 Drug Injections as Negative Reinforcers JF Pharmacological Reviews JO Pharmacol Rev FD American Society for Pharmacology and Experimental Therapeutics SP 437 OP 446 VO 27 IS 3 A1 W. C. Holz A1 C. A. Gill YR 1975 UL http://pharmrev.aspetjournals.org/content/27/3/437.abstract AB