| 21. | He added that he believed that longer-term field tests were impractical.
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| 22. | He said two preliminary field tests on the letter were positive for anthrax.
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| 23. | He has tried his method in field tests to detect buried antitank mines.
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| 24. | Millimetrix hopes to field test the larger model soon at a police agency.
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| 25. | The department has approved field tests for more than 130 other herbicide-tolerant plants.
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| 26. | He refused a Breathalyzer test, and police said he failed eight sobriety field tests.
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| 27. | Full approval is only given after three months of successful field tests by users.
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| 28. | The next phase of field tests is scheduled for mid-April.
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| 29. | During the 1989-1990 school year field test standards were developed.
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| 30. | CBS began daily color field tests on June 1, 1941.
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