The project in the field of mother and child health launched by Nébiha Gueddana in Kollo in Niger is cited by the World Bank as “a path to follow” for other countries.
René Kollo | Walter Kollo | Kollo |
Kollo also emerged as a composer of revues and sound films in 1915, was one of the founders of the performer's rights organization GEMA, and had his own music publishing company.