Asok अशोक - Bombay Rajpal & Sons 1964 - P 143 19 CM Subjects--Topical Terms: GeneralCOLORIMETRIC METHODS, DILUTION AND DUPLICATION METHODS, BALANCING METHODS, ARTIFICIAL LIQUID STANDARDS, SPECTROPHOTOMETRY, VISUAL FILTER PHOTOMETRY Dewey Class. No.: 891.432 / VID-A