TY - RPRT TI - The particle size and shape of silver alloys for dental amalgam : progress report AU - Caul, H J AU - Barton, J A AU - Manuszewski, R C PY - 1968 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS report ; 9984 DO - 10.6028/NBS.RPT.9984 ER -