| Placebo
David Mason | |
| Placet Is a Crazy Place
Brown Fredric | |
| Plague / Its Cause and the Manner of its Extension, Its Menace, Its Control and Suppression, Its Diagnosis and Treatment
Thomas Wright Jackson | |
| Plague and pestilence in literature and art
Sir Raymond Henry Payne Crawfurd | |
| Plague of Pythons
Frederik Pohl | |
| Plague Ship
Andre Norton | |
| Plain Concrete for Farm Use
T. A. H. Miller | |
| Plain English
Marian Wharton | |
| Plain Facts
G. A. Bauman | |
| Plain Facts for Old and Young
John Harvey Kellogg |
