TY - GEN AU - Hyer, Charles W AU - Hyer, Charles W C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1992-01-01 05:01:00 DO - https://doi.org/10.6028/NIST.SP.831 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1992 TI - Directory of professionaltrade organization laboratory accreditationdesignation programs: ER -