- Author: David Schweickart, James Lawler, Hillel Ticktin, Bertell Ollman
- Language: English
- Year: 2016
- Author: David Schweickart, James Lawler, Hillel Ticktin, Bertell Ollman
- Language: English
- Year: 2016
- Author: David Schweickart, James Lawler, Hillel Ticktin, Bertell Ollman
- Language: English
- Year: 2016
- Author: James Lawler Hillel Ticktin Bertell Ollman
- Language: English
- Year: 1997
- Author: David Schweichart James Lawler Hillel Ticktin Bertell Ollman
- Language: English
- Year: 1997