0000315066-99-000003 SC 13G/A 1 19990107 ACNIELSEN CORP 0001019878 8700 061454128 DE 1231 SC 13G/A 34 005-47591 99501833 177 BROAD STREET STAMFORD CT 06901 2038344200 177 BROAD ST STAMFORD CT 06901 FMR CORP 0000315066 0000 161144965 MA 1231 SC 13G/A 82 DEVONSHIRE ST BOSTON MA 02109 6175706339 82 DEVONSHIRE STREET BOSTON MA 02109 SC 13G/A 1 000031506699000003-001-seq1-sc-13g-a.txt SCHEDULE 13G -1-07-99 - ACNIELSEN CORPORATION