This item is authorised by the following title:
Income Tax (Indexation) Regulations (Amendment) (SR 1980 No. 133 | C2004L04973)
Income Tax (Indexation) Regulations (Amendment) (SR 1979 No. 112 | C2004L04972)
Income Tax (Indexation) Regulations (Amendment) (SR 1978 No. 79 | C1978L00079)
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