RT Article T1 Criminal conspiracy and early labor combinations: Massachussetts, 1824-1840 JF Labor history VO 28 IS 3 SP 370 OP 386 A1 Tomlins, Christopher L. 1951- LA English YR 1987 UL https://krimdok.uni-tuebingen.de/Record/1637163169 K1 Sozialgeschichte