- Author: - Cassianus (Bassus NULL) Henricus Beckh (editor)
- Language: German
- Year: 1994
- Author: Linda Null
- Language: English
- Year: 2023
- Author: Casey Null Petersen
- Language: English
- Year: 2018
- Author: Casey Null Petersen
- Language: English
- Year: 2018
- Author: Gary Null PhD Debora Rasio MD Dorothy Smith Carolyn Dean MD ND Martin Feldman MD
- Language: English
- Year: 2010
- Author: Gary Null PhD Richard Gale
- Language: English
- Year: 2021