R. C. Crippen

Determination of Aspirin by Gas Chromatography.

H. Freimuth, R. C. Crippen, 1964 .

Comments on "Determination of Aspirin by Gas Chromatography" and "Quantitative Analysis of Aspirin, Phenacetin, and Caffeine Mixtures by Nuclear Magnetic Resonance."

D. Hollis, J. Levine, R. C. Crippen, 1964 .

Identification of organic compounds with the aid of gas chromatography

R. C. Crippen, 1973 .