| 11. | This course involves extensive field work and completion of field projects.
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| 12. | Much of his own field work was done in the Caribbean.
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| 13. | The members use rubber tires on their tractors for field work.
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| 14. | So he stayed in Minnesota after the summer field work was done.
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| 15. | It might be interesting doing the field work, though.
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| 16. | That off-field work ethic is what the Galaxy needed most.
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| 17. | She seems to have done a lot of field work.
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| 18. | Each TV ad portrays an officer speaking casually about his field work.
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| 19. | Her field work was sponsored by the National Geographic Society.
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| 20. | He was 13 when the backbreaking field work finally chased him away.
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