P. G. Simpson

Anabolic Pathways in Methanogens

William B. Whitman, W. Whitman, Peter G. Simpson, 1993 .

Vascular anatomy in vegetative shoots of Ripogonum scandens Forst. (Smilacaceae)

W. R. Philipson, P. G. Simpson, 1969 .

Structure and development of the haustorium in Mida salicifolia.

B. Fineran, P. G. Simpson, 1970 .