TY  - RPRT
TI  - Spectrophotometric and colorimetric record of some leaves of trees, vegetation, and soil 
AU  - Keegan, Harry J
AU  - Hall, Wiley A, Jr
AU  - Haas, Gladys M
PY  - 1956
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS RPT 4528
DO  - 10.6028/NBS.RPT.4528
ER  -