TY - GEN AU - R M Schoonover AU - H H Ku AU - J R Whetstone AU - J F Houser C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1975-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.IR.75-900 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1975 TI - Liquid level instrumentation in volume calibration: ER -