Developing a Multi-Spectral NIR LED-Based Instrument for the Detection of Pesticide Residues Containing Chlorpyrifos-Methyl in Rough, Brown, and Milled Rice oleh Fatima Rodriguez-Macadaeg, Paul R. Armstrong, Elizabeth B. Maghirang, Erin D. Scully, Daniel L. Brabec, Frank H. Arthur, Arlene D. Adviento-Borbe, Kevin F. Yaptenco, Delfin C. Suministrado