0000350894-04-000055 4 1 20030429 20040511 SEI CORP 0000350894 6211 231707341 PA 1231 1 FREEDOM VALLEY DRIVE OAKS PA 19456-1100 6106761000 1 FREEDOM VALLEY DRIVE OAKS PA 19456-1100 WEST ALFRED P JR 0001059374 4 34 000-10200 04796917 1 FREEDOM VALLLEY DRIVE OAKS PA 19456 810676100 1 FREEDOM VALLEY DRIVE OAKS PA 19456 4 1 edgar.xml PRIMARY DOCUMENT