TY - GEN AU - Joan R Rosenblatt C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1956-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.RPT.4894 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1956 TI - Statistical analysis of data on classification of radiographs of aluminum alloy specimens: ER -