| Hours of labor -- United States. Matches 6 items |
| Hours of labor -- United States -- History. Matches 1 item |
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Hours (Time) SEE: Time Matches 33 items
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Hours (Time) -- Fiction. SEE: Time -- Fiction Matches 4 items
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Hours (Time) -- History. SEE: Horology -- History Matches 2 items
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Hours (Time) -- History -- 20th century. SEE: Time -- History -- 20th century. Matches 1 item
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Hours (Time) -- Juvenile fiction. SEE: Time -- Juvenile fiction Matches 8 items
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Hours (Time) -- Juvenile poetry. SEE: Time -- Juvenile poetry. Matches 1 item
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Hours (Time) -- Mathematical models. SEE: Time -- Mathematical models. Matches 1 item
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Hours (Time) -- Miscellanea. SEE: Time -- Miscellanea Matches 1 item
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