Note 727 — APPENDIX IV. Membership Statistics.
Reading edition
Adapted by permission from Wolman, Leo, "Extent of Labor Organization," Quar. Jour. Econ. (May, 1916), 30: 606-13.
Reading edition
Adapted by permission from Wolman, Leo, "Extent of Labor Organization," Quar. Jour. Econ. (May, 1916), 30: 606-13.