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1.
Spectrophotometric Analysis of Food Dye Solutions by Pinnell, Robert P., Neidig,... ISBN: 9780875403618 List Price: $1.50
2.
Colorimetric Deternination of Aspirin in Commercial Preparation Modular Laboratory Program i... by Pinnell, Robert P., Neidig,... ISBN: 9780875403601 List Price: $1.50