John Charles La Roche MNZM (born 2 April 1937) is a New Zealand engineer and author. As an engineer he specialised in design work for water treatment plants and in waste management.
John Charles La Roche MNZM (born 2 April 1937) is a New Zealand engineer and author. As an engineer he specialised in design work for water treatment plants and in waste management. (en)
John Charles La Roche MNZM (born 2 April 1937) is a New Zealand engineer and author. As an engineer he specialised in design work for water treatment plants and in waste management. (en)