TY - GEN AU - Richard Gann AU - William Guthrie C2 - Technical Note (NIST TN), National Institute of Standards and Technology, Gaithersburg, MD DA - 2009-12-11 LA - en PB - Technical Note (NIST TN), National Institute of Standards and Technology, Gaithersburg, MD PY - 2009 TI - Interlaboratory Study of Alternate Filter Papers for Use in ASTM E 2187 UR - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=904159 ER -