TY - JOUR AU - Ted Hopp C2 - Precision Engineering-Journal of the International Societies for Precision Engineering and Nanotechnology DA - 1990-01-01 LA - en PB - Precision Engineering-Journal of the International Societies for Precision Engineering and Nanotechnology PY - 1990 TI - The Mathematics of Datums UR - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=821174 ER -