TY - GEN AU - Ditmars, D A AU - Douglas, T B AU - Cezariliyan, A AU - Ishihara, S C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1977-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.SP.260-55 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1977 TI - Standard Reference Materials:Enthalpy and heat capacity standard reference material ER -