R. A. Tjalma

发表

R. A. Tjalma, H. Braun, 1972, Environmental health perspectives.
R. A. Tjalma, 1966, Journal of the National Cancer Institute.
R. A. Tjalma, 1958, Public health reports (1974).
R. A. Tjalma, 1957, Journal. Iowa State Medical Society.
R. A. Tjalma, M. Galton, 1965, The American journal of tropical medicine and hygiene.
R. A. Tjalma, J. L. Braun, 1959, American journal of public health and the nation's health.
R. A. Tjalma, I. Smith, 1958, Journal of the American Veterinary Medical Association.
R. A. Tjalma, 1958, Journal. Iowa State Medical Society.
R. A. Tjalma, P. Schnurrenberger, H. Stegmiller, 1961, Journal of the American Veterinary Medical Association.