SECURITIES EXCHANGE COMMISSION

                              Washington, DC 20549

                    Under the Securities Exchange Act of 1934

                               (Amendment No. 2)


                                GREIF BROS. CORP.
                                (Name of Issuer)

                                   Common "A"
                         (Title of Class of Securities)
                               December 31, 2003
             (Date of Event Which Requires Filing of this Statement)

                 Check the appropriate box to designate the rule
                    pursuant to which this Schedule is filed

                                [ ] Rule 13d-1(b)
                                [X] Rule 13d-1(c)
                                [ ] Rule 13d-1(d)

                                    397624107
                                 (CUSIP NUMBER)








1) Name of Reporting Pioneer Person Global Asset Management IRS Identification No. of Above 2) Check the Appropriate Box (a) of A Member of Group (See Instructions) (b) 3) SEC Use Only 4) Citizenship of Place of Organization Milan,Italy Number of (5) Sole Voting 0 Shares Power Beneficially Owned (6) Shared Voting 0 by Each Reporting Power Person With (7) Sole Disposi- 0 tive Power (8) Shared Disposi- 0 tive Power 9) Aggregate Amount Beneficially Owned by Each Reporting Person 10) Check if the aggregate Amount in Row (9) Exclude Certain Shares (See Instructions) 11) Percent of Class Represented By Amount in Row 9. 12) Type of Reporting Person (See Instructions)

Item 1(a) Name of Issuer. GREIF BROS. CORP. Item 1(b) Address of Issuer's Principal Executive Offices: GREIF BROS. CORP. 425 Winter Road Delaware, OH 43015 Item 2(a) Name of Person Filing: Pioneer Global Asset Management S.P.A. Item 2(b) Address of Principal Business Office: Galleria San Carlo 6 20122 Milan, Italy Item 2(c) Citizenship: Milan, Italy Pioneer Global Asset Management S.P.A Item 2(d) Title of Class of Securities:. Common Stock Item 2(e) CUSIP Number: 397624107 Item 3 The person filing this statement pursuant to Rule 13d-1(b) or 13d-2(b) is: Inapplicable

Item 4. Ownership. (a) Amount Beneficially Owned: (b) Percent of Class: (c) Number of shares as to which such person has (i) sole power to vote or to direct the vote (ii) shared power to vote or to direct vote (iii) sole power to dispose or to direct disposition of (iv) shared power to dispose or to direct disposition Item 5. Ownership of Five Percent or Less of a Class. If this statement is being filed to report the fact that as of the date Hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check here: YES Item 6. Ownership of More than Five Percent on Behalf of Another Person. Inapplicable. Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported On By the Parent Holding Company. Inapplicable. Item 8. Identification and Classification of Members of the Group. Inapplicable. Item 9. Notice of Dissolution of the Group. Inapplicable.

Item 10. Certification. By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired in the ordinary course of business and were not acquired for the purpose of and do not have the effect of changing or influencing the control of the issuer of such securities and were not acquired in connection with or as a participant in any transactions having such purposes or effect. After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. February 10, 2004 Date /s/Dario Frigerio Chief Executive Officer