RT Book
T1 Child labor and social progress: proceedings of the 4th annual meeting of the National Child Labor Committee
T2 The Annals of the American Academy of Political and Social Science Supplement
JF The annals of the American Academy of Political and Social Science / Supplement
LA English
PP New York
PB Kraus Repr.
YR 1970
ED Philadelphia, 1908 (Repr.)
UL https://krimdok.uni-tuebingen.de/Record/1090632789
K1 USA : Kinderarbeit