Rosbach, Johan Hammond,  1921-2004 <br/><br/>
Bagatelaro / 
Johan Hammond Rosbach. 
 - Oslo :   Eldonis Esperantoforlaget,   1951. 
 - 174 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Linguistics and languages<br/>Esperanto