![Determination of Vitamin A Correlation of Improved Spectrophotometric and Colorimetric Methods Correlation of Improved Spectrophotometric and Colorimetric Methods with Multi-Level Bioassays]()
Determination of Vitamin A Correlation of Improved Spectrophotometric and Colorimetric Methods Correlation of Improved Spectrophotometric and Colorimetric Methods with Multi-Level BioassaysOser, Bernard L.; Melnick, Daniel; Pader, Morton; Roth, Roslyn; Oser, Mona · Industrial & Engineering Chemistry Analytical Edition · 1945