TY - GEN AU - Keegan, Harry J AU - Schleter, John C AU - Hall, Wiley A C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1955-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.RPT.4322 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1955 TI - Spectrophotometric and colorimetric change in the leaf of a white oak tree under conditions of natural drying and excessive moisture: ER -