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Ladstone Holdings Ltd v Leonora Holdings Ltd 1 NZLR 211 is a cited case in New Zealand regarding that silence on a matter does not constitute misrepresentation.
References
Chetwin, Maree; Graw, Stephen; Tiong, Raymond (2006). An introduction to the Law of Contract in New Zealand (4th ed.). Thomson Brookers. ISBN0-86472-555-8.