North American Product Classification System (NAPCS) Canada [Provisional Version 0.1]
- 54 - Professional, scientific, and technical services
- 541083 - Marketing research and public opinion polling services
- 541083.1 - Marketing research and public opinion polling services
- 541083.1.1 - Marketing research services
- 541083.1.1.1 - Marketing research services, conducted by telephone
- 541083.1.1.2 - Marketing research services, conducted via the Internet
- 541083.1.1.3 - Marketing research services conducted by mail
- 541083.1.1.4 - Marketing research services using focus groups
- 541083.1.1.5 - Marketing research services using face-to-face methods, except focus groups
- 541083.1.1.6 - Media audience rating services
- 541083.1.1.7 - Marketing research services, n.e.c.
- 541083.1.2 - Public opinion research and polling services
- 541083.1.3 - Statistical sampling and survey design services
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