BEECHAM GROUP <BHAMY> TO SELL UNIT Privately-held investment firm <Dubin Clark and Co> said it has signed a definitive agreement for an investment group it heads to acquire Roberts Consolidated Industries from <Beecham Group PLC> for 45 mln dlrs. Roberts makes and distributes accessories, adhesives and tools used in carpet installation. Dubin Clark said its group includes Roberts management and London investment company <J. Rothschild Holdings PLC>. It said Ronald J. Dubin will become vice chairman of Roberts and J. Thomas Clark chairman. REUTER^M