North American Product Classification System (NAPCS) Canada 2017 Version 1.0
- 772 - Architectural, engineering and related services
- 77241 - Surveying and mapping services
- 772411 - Geophysical data acquisition
- 7724111 - Geophysical data acquisition by seismic methods
- 7724112 - Geophysical data acquisition by non-seismic methods
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