TY - GEN AU - Maureen A Breitenberg C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1988-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.IR.87-3821 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1988 TI - The ABC's of certification activities in the United States: ER -