- Author: Carl Ipsen
- Language: English
- Year: 1996
- Author: Carl Ipsen
- Language: English
- Year: 1996
- Author: Carl Ipsen (auth.)
- Language: English
- Year: 2006
- Author: David Carl Ipsen
- Language: English
- Year: 1960
- Author: Carl Ipsen
- Language: English
- Year: 2006
- Author: David Carl Ipsen
- Language: English
- Year: 1960