@misc{1163361,
  author = {William F Koch},
  title = {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/},
  year = {1986},
  month = {1986-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.SP.260-106},
  language = {en},
}