Bowen EHS, Incorporated

year of pub­li­ca­ti­onISBNauthor(s)title
2007978-0-9792519-5-5Russell B. BowenVentilation Workbook
2008978-0-9792519-8-6Russell BowenBowen EHS Book Of CIH Exam Practice Problems: 50 Questions (Volume 2)
  ''978-0-9792519-9-3Russell BowenBowen EHS Book Of CSP Exam Practice Problems: 50 Questions (Volume 2)