1 ARTHUR ANDERSEN LLP CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation of our reports incorporated by reference or included in this Form 10-K, into the Company's previously filed Registration Statement File Nos. 33-53274, 33-63681, 33-65445 and 33-00269. ARTHUR ANDERSEN LLP Philadelphia, PA October 29, 1998