TY - RPRT TI - Monitoring corn and soybean crop development with hand-held radiometer spectral data AU - Tucker, C. J. AU - Elgin, J. H., Jr. AU - Mcmurtrey, J. E., III AU - Fan, C. J. PY - 1979 UR - https://ntrs.nasa.gov/citations/19790062570 ID - 19790062570 ER -