RT Book T1 Socioeconomic background and achievement T2 Studies in population A1 Duncan, Otis Dudley 1921-2004 A1 Featherman, David L. A1 Duncan, Beverly A2 Featherman, David L. A2 Duncan, Beverly LA English PP New York u.a. PB Seminar Press YR 1973 ED 2. print. UL https://krimdok.uni-tuebingen.de/Record/1074054202