- Author: Mark E. Warchol Jennifer S. Stone Allison B. Coffin Arthur N. Popper Richard R. Fay
- Language: English
- Year: 2023
- Author: Autumn Stringam Charles Popper MD Scott M Shannon Emily Heckman David Hardy Anthony Stephan
- Language: English
- Year: 2007
- Author: Nicholas Popper Ann Blair
- Language: English
- Year: 2021
- Author: Karl Raimund Popper
- Language: English
- Year: 1997
- Author: Karl Raimund Popper
- Language: English
- Year: 1963
- Author: MARCUSE HERBERT POPPER KARL
- Language: Greek
- Year: 2005
- Author: Karl R. Popper Dario Antiseri (editor)
- Language: Italian
- Year: 1997
- Author: Popper Karl R.
- Language: Norwegian
- Year: 1981
- Author: Lori L. Holt Jonathan E. Peelle Allison B. Coffin Arthur N. Popper Richard R. Fay
- Language: English
- Year: 2022