PHILADELPHIA SUBURBAN &lt;PSC> BUYS SOFTWARE FIRM

  Philadelphia Suburban Corp said
  it acquired Mentor Systems Inc, a Lexington, Ky., computer
  software company, for common stock.
      Detailed terms were not disclosed.
      Mentor specializes in public sector accounting systems. It
  has 73 employees at its Lexington facility, four branch offices
  in the Midwest and one in New York.
  

