The User-Friendly Phone Book

The User-Friendly Phone Book is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Advertising Directory & Guide
• Telephones Directories & Guides

North American Industry Classification System (NAICS) Categories:

• Advertising Agencies > Directory Advertisers
• Media Representatives > Guides & Directories
• Advertising Material Distribution Services

Standard Industry Classification (SIC) Categories:

• Radio Television & Publisher's Advertising Representatives > Guides & Directories
• Advertising, Nec