TY - GEN AU - Danner, William F C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1997-01-01 05:01:00 DO - https://doi.org/10.6028/NIST.IR.5972 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1997 TI - Developing application protocols (Aps) using the architecture and methods of STEP (Standard for the Exchange of Product data)::fundamentals of the STEP methodology ER -