TY - GEN AU - Henry E Copeland AU - W T Sweeney C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1955-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.RPT.4495 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1955 TI - Preliminary study, tropical storage of dental materials ::progress report ER -