RT Book T1 Labeling the mentally retarded: clinical and social system perspectives on mental retardation A1 Mercer, Jane R. LA English PP Berkeley PB Univ. of California Pr. YR 1973 UL https://krimdok.uni-tuebingen.de/Record/1609006542 NO Mit Bibliogr SN 0520021835 K1 Geistig behinderter Mensch : Labeling approach K1 Geistige Behinderung