TY - CONF AU - Low, Samuel AU - Gettings, R AU - Jr, Walter Liggett AU - Song, Jun-Feng C2 - Proceedings of National Conference of Standards Laboratories Symposium, , USA DA - 1999-07-01 00:07:00 LA - en PB - Proceedings of National Conference of Standards Laboratories Symposium, , USA PY - 1999 TI - Rockwell Hardness - A Method-Dependent Standards Reference Material ER -