Manfred G. Riedel (Riedel, Manfred G.)

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  A Kid's Guide to the Economy
  by Ric Estrada, Manfred G. Riedel
  Hardcover, Prentice-Hall, ISBN 0135151309 (0-13-515130-9)
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  Odds and Chances for Kids
  by Bill Kresse, Manfred G. Riedel
  Hardcover, Prentice-Hall, ISBN 0136304427 (0-13-630442-7)
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  Winning With Numbers
  by Manfred G. Riedel
  Hardcover, Simon & Schuster, ISBN 0139614664 (0-13-961466-4)