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61
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62
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63
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64
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65
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66Published 1974Subjects “...Light absorption Congresses....”
Conference Proceeding Book -
67
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68
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69by Boast, Warren B. (Warren Benefield), 1909-Subjects “...Electric lighting....”
Published 1942
Book -
70
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71
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72
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73
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74
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75
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76
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77
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78
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79
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80Published 1996Subjects “...Variable stars Light curves Atlases....”
Book