8 books • 3 series
Laugh Out Loud (Laugh Out Loud!)
Money and Credit (World Economy Explained)
Insurance (World Economy Explained)
International Trade (World Economy Explained)
Banks and Banking (World Economy Explained)
International Aid and Loans (World Economy Explained)
The Stock Market (World Economy Explained)
The Life and Work Of. . . Set (Life and Work of . . .)