P. Johnson

Chemical additives.

P. Johnson, 1956, Journal of the American Medical Association.

Chronic constipation: a clinical conundrum.

W. Orr, P. Johnson, C. Yates, 1997, Journal of the American Geriatrics Society.

First Laboratory Measurements of Thermochemical Kinetics of SO 2 Reactions with Putative Venus Crustal Minerals

R. Shorthill, K. J. Vogler, P. Johnson, 1987 .

Creative contribution of natural substances in present day perfumery

P. Johnson, 1986 .

Health aspects of food additives.

P. Johnson, 1966, American journal of public health and the nation's health.