Assessment proceedings, etc. not to be invalid on certain grounds
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....ssment proceedings, etc. not to be invalid on certain grounds (1) No assessment, re-assessment, adjudication, review, revision, appeal, rectification, notice, summons or other proceedings done, accep....
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....fect in conformity with or according to the intents, purposes and requirements of the Act or any earlier law. (2) The service of any notice, order or communication shall not be called in question if ....