Who's Mailing What

Who's Mailing What is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Publishers
• Publishers Magazines & Periodicals

North American Industry Classification System (NAICS) Categories:

• Periodical Publishers > Periodicals, Publishing > Publishers Magazines & Periodicals
• All Other Publishers

Standard Industry Classification (SIC) Categories:

• Periodicals: Publishing, Or Publishing And Printing > Periodicals, Publishing > Publishers Magazines & Periodicals
• Miscellaneous Publishing