RT Book T1 Change in locus of control, anxiety, depression and social behavior as a function of time in methadone maintenance therapy A1 Hanbury, Raymond F. LA Undetermined PP Ann Arbor, Mich. PB Univ. Microfilms Internat. YR 1983 UL https://krimdok.uni-tuebingen.de/Record/1084071614 K1 Hochschulschrift