MBA, Okyere Bonna · Okyere MBA Bonna · Oscar Bohn · Oskar Baum
| title | ISBN-13 | year of publication |
|---|---|---|
| American Presidents and the Making of the Presidency | 978-1-4257-4593-6 | 2007 |
| A New Agenda For Ghana: Building a Nation on Vision and Ideas Volume One | 978-1-4259-4828-3 | 2006 |
| God's Plan for Your Life | 978-1-4259-1259-8 | 2006 |
| Presidents of the United States of America Workbook | 978-1-4257-5369-6 | 2007 |
| Who is Barack Obama? | 978-1-4793-8823-3 | 2012 |
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