North American Product Classification System (NAPCS) Canada 2017 Version 1.0
- 642 - Research and development services
- 64221 - Research and development services
- 642211 - Research and development services in natural and engineering science and technologies
- 6422111 - Research and development services in natural and engineering science and technologies
- 642212 - Research and development services in social sciences and humanities
- 6422121 - Research and development services in social sciences and humanities
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