TY - GEN AU - Nicodemus, Fred E C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1985-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.TN.910-8 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1985 TI - Self-study manual on optical radiation measurements ::Part I--Concepts, Chapter 12 ER -