TY - GEN AU - Vaughan, R T C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1959-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.RPT.6504 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1959 TI - Fractional factorial designs for experiments with factors at two and three levels: ER -