TY - RPRT TI - Appetitive acquisition and extinction effects with exogenous ACTH. AU - S Guth AU - S Levine AU - J P Seward PY - 1971 DO - 10.1016/0031-9384(71)90282-4 UR - https://pubmed.ncbi.nlm.nih.gov/4337408/ ID - 4337408 ER -