131 EXHIBIT 21 SUBSIDIARIES OF REGISTRANT Name of Subsidiary Incorporated Under Laws of Barzon Corporation Delaware CorrChoice, Inc. Ohio Fibro Tambor, S.A. de C.V. Mexico GPS of Georgia, LLC Georgia Greif Bros. Corporation of Virginia Virginia Greif Containers Inc. Canada Greif Fibre Drum, Inc. Delaware Greif Plastic Drum, Inc. Illinois Greif Plastic Drum S.E. Division, Inc. Kentucky Greif Plastic Drum S.W. Division, Inc. Texas Soterra, Incorporated Delaware Tainer Transport, Inc. Delaware