| 31. | Synthetic resins have largely replaced organic balsams for such applications.
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| 32. | Balsam fir oil is an EPA approved nontoxic rodent repellent.
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| 33. | They are followed by balsam poplar and eventually white spruce.
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| 34. | It is usually found on balsam fir, occasionally on white birch.
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| 35. | The layers of glass were bonded together by Canada balsam.
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| 36. | The Art Loeb Trail follows the grassy ridge of Black Balsam Knob.
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| 37. | Martin Balsam plays the character Rockne O'Bannon in this episode.
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| 38. | The two defeat Thunderclap with Morris standing on Balsam's back.
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| 39. | The combined strength of Morris and Balsam becomes too much for Thunderclap.
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| 40. | The vast expanses of balsam fir predominate in upland sites.
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