He was a notable member of the Art and Language group that flourished in the 1970s .
Ian Burn ( 29 December 1939 -- 29 September 1993 ) was an influential Australian conceptual artist .
Ian Burn was a notable artist of the Art and Language group that flourished in the 1970s .
Ian Burn ( 29 December 1939 -- 29 September 1993 ) was an influential Australian conceptual artist .