1 EXHIBIT 23.1 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation of our report dated November 7, 1994 included in this Form 10-K for the fiscal year ended September 30, 1994 into the Company's previously filed Registration Statements on Form S-8, Registration Nos. 33-11818, 33-30879, 33-33329 and 33-44002, and on Form S-3, Registration Nos. 33-41357, 33-47564 and 33-52587. ARTHUR ANDERSEN LLP Philadelphia, Pennsylvania November 22, 1994