- Author: Louie O'Brien
- Language: English
- Year: 2016
- Author: (Author of Expression) Kerry O'Brien
- Language: English
- Year: 2019
- Author: Yona Zeldis McDonough, John O'Brien
- Language: English
- Year: 2004
Weather
pdf
- Author: Philip D. Thompson and Robert O'Brien
- Language: English
- Year: 1965
Ships
pdf
- Author: Edward V. Lewis and Robert O'Brien
- Language: English
- Year: 1965
Machines
pdf
- Author: Robert O'Brien
- Language: English
- Year: 1964
- Author: Bruce R. O'Brien
- Language: English
- Year: 2015
- Author: D. P. O'Brien
- Language: English
- Year: 2017
- Author: Jeff Madrick, Ruth O'Brien
- Language: English
- Year: 2010
- Author: Patricia O'Brien
- Language: English
- Year: 2014