Genehmigt für d. Gebrauch in Schulen durch Education and Religious Affairs Branch, Office of Military Government for Germany (US), File No. GE-IA 350.01 (Germany)
Genehmigt für d. Gebrauch in Schulen durch Education and Religious Affairs Branch, Office of Military Government for Germany (US) am 24. Juli 1949, File No. GE-IA 350.01 (Germany)