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INTERLABORATORY COMPARISON OF ABSORPTION SPECTRA BY THE PHOTOELECTRIC SPECTROPHOTOMETRIC METHOD.—DETERMINATIONS ON CHLOROPHYLL AND WEIGERT'S SOLUTIONS1
1Purdue University Agricultural Experiment Station, West Lafayette, Indiana
2Division of Fruit Products, the University of California
1
Journal Paper no. 4, Purdue University Agricultural Experiment Station. Herman Frasch Foundation for Research in Agricultural Chemistry, Paper no. 215.