| 41. | Anyone interested in playing with mushrooms should at least own a decent field guide.
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| 42. | The wealth of information he presents goes beyond that found in other field guides.
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| 43. | Many field guides note their greater ( but also superficial ) resemblance to thrushes.
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| 44. | Roger Tory Peterson published his first field guide in 1934, and the rest is history.
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| 45. | Some do hesitate to call it a field guide.
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| 46. | One field guide notes a preference for sugar maple.
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| 47. | You probably saw two new field guides on hand.
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| 48. | None of this makes life easy for migratory birders, or for publishers of field guides.
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| 49. | Chin bought field guides to Rocky Mountain scat and began assembling her own personalphoto collection.
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| 50. | An excellent field guide, chock-full of maps and charts.
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