TY - GEN AU - Ku, Richard AU - Saunders, Patsy B C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1971-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.RPT.10498 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1971 TI - Sequencing the purchase and retirement of fire engines: ER -