The former husband of Sydney woman Lynette Dawson has formally pleaded not guilty to her murder.
Chris Dawson, a former rugby league player and teacher, was charged in December over the disappearance of his then-wife Lynette on Sydney's northern beaches in 1982.
His lawyer Greg Walsh formally entered a not guilty plea at Downing Centre Local Court on Thursday.
The matter is due back before the same court on August 8.
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