Autor: P f, 239 de titluri

P.f. Thomese

F.r.c.p. M.d. Gerald Anderson

Strawson,P. F

P. F. Chisholm

P. F. Chisholm

P. F. Chisholm

Northern Yearly Meet F. &. P. Committee

F. De P. Castells

Ion M. Popescu,Constantin P. Cristescu,Alexandru Preda,Gabriela F. Cone

Jr. Gerald F. Combs,James P. Mcclung

Ross J. Salawitch,Timothy P. Canty,Austin P. Hope,Walter R. Tribett,Brian F. Bennett

Michael P Federle