# PDP Research Group — Countries

Canonical: https://www.bookquiver.com/pdp-research-group/countries

- Authors: [PDP Research Group](https://www.bookquiver.com/pdp-research-group)
- Books: 2
- Countries: 1

## Countries

- United States (`en_US`) — 2 books

The whole shelf, book by book: [PDP Research Group.md](https://www.bookquiver.com/pdp-research-group.md)