- A Pictorial Illustration of Cotton Planting with an Emperor Inscription
- A Picture Album on Farming and Weaving
- A Picul of Cinnabar
- apiculture meteorology
- A Piece of Self-Explanation Written in the Jail
- A Piece of Seven-Chi Cloth
- Apiezon
- A Pigeon Sat on a Branch Reflecting on Existence
- API gravity
- a pile of plates
- Ap index
- AP-integral
- apiosoma piscicola disease
- Apis
- API system
- API度
- API水泥
- API系统
- ApJ
- ApJL
- ApJS
- APL
- A Place in the World
- aplanat
- aplanatic