title: Principles of differential spectrophotometry with special reference to the dual wavelength method.
mesh_terms: D005069:Evaluation Studies as Topic; D007700:Kinetics; D007834:Lasers; D008722:Methods; D009991:Oscillometry; D010084:Oxidation-Reduction; D013053:Spectrophotometry / Q000295:instrumentation*; D013997:Time Factors