0000927016-99-000709 8-K 1 19990211 5 19990217 BOSTON PROPERTIES INC 0001037540 6500 042473675 DE 1231 8-K 34 001-13087 99544196 8 ARLINGTON ST BOSTON MA 02116 6178592600 8 ARLINGTON ST 8 ARLINGTON ST BOSTON MA 02116 8-K 1 000092701699000709-001-seq1-8-k.txt FORM 8-K