TY - GEN AU - Hardgrave, W Terry AU - Salazar, Sandra B C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1981-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.IR.81-2302 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1981 TI - The positional set processor ::a tool for data modeling ER -