https://youtu.be/q8CcQJfu_YU

https://www.amazon.ca/Quality-Assurance-Control-Field-Work/dp/1533192073?tag=operapc-def-sp-cos-ca-20 P. Geo. Ricardo A Valls, M. Sc. and Geo Gadfly Valls Geoconsultant ORCID ID- https://orcid.org/0000-0002-5421-0914 Scopus Author ID: 7003369619/35335510700 ResearcherID: S-6604-2018 If you like this content, please "buy me a coffee" https://www.buymeacoffee.com/goldendroplets