海量图书期刊资源，随时随地畅享阅读乐趣
Effects of drug-induced differences in reinforcement frequency on discriminative stimulus properties of fentanylJean Vry; Wouter Koek; Jef L. Slangen · 1984
Habituation of the head-poke response: Effects of an amphetamine-barbiturate mixture, PLG and fenfluramineWouter Koek; Jef L. Slangen · 1981