TY - GEN AU - G C Paffenbarger C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1971-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.RPT.10533 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1971 TI - Dental cements, direct filling resins, composite and adhesive restorative materials - a resume ::progress report ER -