TY - GEN AU - Nicodemus, Fred E C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1976-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.TN.910-1 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1976 TI - Self-study manual on optical radiation measurements ::Part I--Concepts, Chapters 1 to 3 ER -