TY - BOOK ID - 136944522 TI - Standard reference materials : standardization of pH measurements AU - Durst, Richard A. AU - United States. PY - 1975 PB - Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:136944522 AB - ER -