- Author: Charles M. Hansen
- Language: English
- Year: 2007
- Author: R. C. Hansen
- Language: English
- Year: 2006
- Author: Michael Casey mon Redwood Kardon Douglas Hansen Paddy Morrissey
- Language: English
- Year: 2003
- Author: Redwood Kardon Douglas Hansen Michael Casey mon
- Language: English
- Year: 2006
- Author: Rattan Lal Norman Uphoff Bobby A. Stewart David O. Hansen
- Language: English
- Year: 2005
- Author: Charles Audet Pierre Hansen Brigitte Jaumard
- Language: English
- Year: 2000
- Author: Charles D. Hansen Chris R. Johnson
- Language: English
- Author: Per Christian Hansen
- Language: English
- Year: 2006