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- 31027468 contributor B780158.
- 31027468 contributor B780159.
- 31027468 created "1930]".
- 31027468 date "1930".
- 31027468 date "1930]".
- 31027468 dateCopyrighted "1930]".
- 31027468 extent "68 p. incl. tables, forms.".
- 31027468 issued "1930".
- 31027468 issued "1930]".
- 31027468 language "eng".
- 31027468 publisher "[Baltimore?".
- 31027468 spatial "Maryland.".
- 31027468 subject "331.113309752".
- 31027468 subject "Ability, Influence of age on.".
- 31027468 subject "HD6280 .M3".
- 31027468 subject "Labor and laboring classes Maryland.".
- 31027468 title "The older worker in Maryland.".
- 31027468 type "text".