6 books • 10 series
Book #20: Moldova
Book #20: Guyana
Book #21: Cameroon
Book #21: Grenada
Book #22: Bhutan
Book #1: Belize
Book #4: Austria
Book #6: Zimbabwe
Book #7: Canada
Book #7: Jamaica
Book #8: Romania
Book #8: Poland
Book #12: Panama
Book #16: Tanzania
Book #16: Guatemala
Book #5: Iraq
Book #8: Switzerland
Book #8: Hungary
