(Q34244746)
Statements
1 reference
Analysis of fixed-ratio behavior maintained by drug reinforcers (English)
1 reference
P Skjoldager
1 reference
G Winger
1 reference
J H Woods
1 reference
1 September 1991
1 reference
1 reference
331-343
1 reference
1 reference
1 reference
Identifiers
1 reference
1 reference
1 reference