@misc{61956,
  author = {Georgia Harris and L.F. Eason},
  title = {NIST HB 105-4, Specifications and Tolerances for Reference Standards and Field Standard Weights and Measures 4. Specifications and Tolerances for Liquefied Petroleum Gas and Anhydrous Ammonia Pressurized Volumetic Field Standards},
  year = {2010},
  month = {2010-02-01},
  publisher = {Handbook (NIST HB), National Institute of Standards and Technology, Gaithersburg, MD},
  language = {en},
}