TY - GEN AU - Koch, William F C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1986-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.SP.260-106 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1986 TI - Standard Reference Materials ::Methods and procedures used at the National Bureau of Standards to prepare, analyze and certify SRM 2694, simulated rainwater, and recommendations for use/ ER -