61
Published [1981]

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62
Published [1981]

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64
Published [1980]

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65
66
Published [1982]

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67
Published [1981]

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69
Published [1982]

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72
Published [1983?]

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73
74
Published [1981]

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78
by Plummer, James R.,
Published 1982 Mar. 31.

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80