TY  - BOOK
AU  - Lapenna,Ivo
ED  - Universal Esperanto Association Research and Decumentation Centre
TI  - Seventy years of the international language
U1  - 408.92 
PY  - 1957///
CY  - Ontario
PB  - Esperanto Press
KW  - Language and languages
KW  - Foreign language
KW  - Congresses
KW  - congresses
N1  - Original text in Esberanto
ER  -