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61Published 1990“...HE 311 .D44 .P712 1990...”
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62Published 1990“...HE 193 .P976 1990...”
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63Published 1990“...HE 193 .T7722 1990...”
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64Published 1991“...HE 193 .P976 1991...”
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65Published 1991“...HE 193 .T7722 1991...”
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66Published 1991“...HE 11 .N532...”
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67Published 1989“...HE 193 .T7722 1989...”
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68Published 1990“...HE 193 .T7727 1990...”
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69
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70Published 1994“...HE 297.5 .N532 1994...”
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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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76Published 1993“...HE 311 .N52 .D9 .P976...”
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77Published 1993“...HE 311 .N52 .D9 .S678...”
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78Published 1993“...HE 297.5 .Z7 .N4 .R336...”
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79Published 1993“...HE 311 .N52 .D9 .D915...”
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80