TY - JOUR AU - Thomas O'Brian AU - Bettye Johnson AU - F Sakuma C2 - Metrologia DA - 1996-01-01 LA - en M1 - 32 PB - Metrologia PY - 1996 TI - Direct Intercomparison of Copper and Gold Freezing Point Blackbody Primary Standards from NRLM and NIST ER -