Year Published
1964
Precision Control in Spectrophotometric Analysis
Covar, R.R. and Banasihan, G.E. 1964. A presentation of the statistical method on precision control works in spectophotometric analysis. Confidence limits at 95% as well as 99% levels of significance are given for various elements analyzed in different PHILSUGIN soils laboratories in Luzon. PROCEEDINGS OF THE PHILIPPINE SUGAR TECHNOLOGISTS. August: 32-38.