TY - RPRT TI - Spectrophotometric and colorimetric study of foliage stored in covered metal containers AU - Keegan, Harry J AU - Schleter, John C AU - Hall, Wiley A PY - 1955 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS report ; 4370 DO - 10.6028/NBS.RPT.4370 ER -