TY - GEN AU - Early, E AU - Cromer, Christopher AU - Xiong, X AU - Dummer, D AU - O'Brian, Thomas AU - Parr, Albert C2 - Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD DA - 1999-07-26 LA - en M1 - 43 PB - Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD PY - 1999 TI - NIST Reference Densitometer for Visual Diffuse Transmission Density UR - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=841323 ER -