Gretchen Shearer

Gretchen Shearer

Gretchen Shearer is a senior research chemist at McCrone Associates, Inc., 850 Pasquinelli Dr., Westmont, Ill. 60559, U.S.A.; tel.: 630-887-7100, and teaches Pharmaceutical Materials and Contaminants and Infrared Microscopy at Hooke College of Applied Sciences, LLC; e-mail: [email protected]; www.mccrone.com

Articles by Gretchen Shearer

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