TY - SER TI - Headquarters USA: a directory of contact information for headquarters and other central offices of major business & organizations in the United States and in Canada PY - 2003/// CY - Detroit, Mich. PB - Omnigraphics, Inc. KW - Business enterprises KW - United States KW - Directories KW - Telephone directories N1 - volume 1; Alphabetical by organization name -; volume 2; Classified by subject ER -