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61
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62
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63
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64Published 2001“...HT 243 .N5 .B433 c 2001...”
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65
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66
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67Published 1987“...HD 1120.5 .Z63 .L253...”
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68
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69
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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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75Published 1991“...HC 663.5 .G946...”
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76
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77Published 2007“...HC 663.5 .E613 2007 summary...”
Archived copy available at the National Library of New Zealand
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78Published 1998“...HD 1120.5 .Z63 .M175 analysis...”
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79Published 1999“...HC 663.5 .S9646 2000...”
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80Published 2007“...HC 663.5 .E613 2007...”
Archived copy available at the National Library of New Zealand
Book