TY - GEN AU - Arthur Hockman AU - T W Reichard AU - E W Krussell C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1956-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.RPT.4550 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1956 TI - A study of some physical properties of five rock samples: ER -