TY - JOUR AU - Proctor, Frederick AU - Kramer, Thomas C2 - SPIE series DA - 1998-11-30 00:11:00 LA - en PB - SPIE series PY - 1998 TI - A Feature-Based Machining System Using STEP UR - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=823356 ER -