A. L. Beckwith

Pneumocystis carinii pneumonia. Cytologic manifestations and rapid diagnosis in routinely prepared Papanicolaou-stained preparations.

B. Naylor, A. Flint, A. L. Beckwith, 1986, The American journal of medicine.

776. The chemistry of Western Australian plants. Part VI. The occurrence of betulic, oleanolic, and ursolic acids

P. R. Jefferies, D. White, J. Watkins, 1952 .