| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Hallo, Freunde!: Kinder-Arbeitsbuch | 978-9985-71-059-3 (9985-71-059-2) | 1998 |
| Hallo, Freunde!: Kinderbuch | 978-9985-71-058-6 (9985-71-058-4) | 1998 |
And Hammerstein Org. Rodgers · H-O. · Hatherleighfoundation.Org · Heitor Megale (Org. ) · Pan American Health Org · World Health Org · World Health Org Staff