Exhibit 4 Joint Filing Agreement The undersigned agree that the foregoing Amendment No. 4 to Schedule 13D, dated June 17, 1998, is being filed with the Securities and Exchange Commission on behalf of each of the undersigned pursuant to Rule 13d-1(f)....Joint Filing Agreement • June 17th, 1998 • Smith Thomas W • Wholesale-chemicals & allied products
The undersigned agree that the foregoing Amendment No. 4 to Schedule 13D, dated June 17, 1998, is being filed with the Securities and Exchange Commission on behalf of each of the undersigned pursuant to Rule 13d-1(f).
