TY - JOUR AN - 2 AU - Chiara,G Di. AU - Acquas,E. AU - Tanda,G. AU - Cadoni,C. TI - Drugs of abuse: biochemical surrogates of specific aspects of natural reward? JO - Biochem Soc Symp PY - 1993 VL - 59 SP - 65-81 M2 - 65 ER -