- Author: Jim Holt
- Language: Portuguese
- Year: 2013
- Author: Claire Holt
- Language: English
- Year: 1967
- Author: Thomas J. Holt Adam M. Bossler Kathryn C. Seigfried-Spellar
- Language: English
- Year: 2022
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- Author: Thomas J. Holt Adam M. Bossler Kathryn C. Seigfried-Spellar
- Language: English
- Year: 2022
- Author: Eve-Marie Becker, Jan Dochhorn, Else Holt
- Language: English
- Year: 2014
- Author: Glen E. Holt, Leslie Edmonds Holt
- Language: English
- Year: 2016