Callahan Klein Communications

Callahan Klein Communications is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Consultants - Communication

North American Industry Classification System (NAICS) Categories:

• Wireless Telecommunications Carriers (Except Satellite)
• All Other Telecommunications
• Engineering Services > Engineers Electrical, Electronic & Communications > Communication Consultants
• Other Management Consulting Services > Communications Consultants
• Other Scientific And Technical Consulting Services > Communications Consultants

Standard Industry Classification (SIC) Categories:

• Communication Services, Nec > Specialty Communication Companies & Services > Communication Consultants
• Business Consulting Services, Nec > Communications Consultants