RT Article T1 Period effects in the impact of Vietnam-era military service on crime over the life course JF Crime & delinquency VO 60 IS 6 SP 859 OP 883 A1 Bouffard, Leana A. LA English YR 2014 UL https://krimdok.uni-tuebingen.de/Record/1912649799 DO 10.1177/0011128710372455