ID:DA14200449
Billups, Robert S.
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[prepared by Robert S. Billups and Philip L. Jones]
U.S. G.P.O. 1929 Miscellaneous series , Bulletin / Bureau of Labor Statistics no. 483
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by Robert S. Billups and Philip L. Jones
G.P.O. 1925 Miscellaneous series , Bulletin / Bureau of Labor Statistics no. 384
1920-1924