TY - GEN AU - Keegan, Harry J AU - Hall, Wiley A AU - Haas, Gladys M C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1956-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.RPT.4528 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1956 TI - Spectrophotometric and colorimetric record of some leaves of trees, vegetation, and soil: ER -