Music ( notated ; visual ) : unmediatedLudus brasiliensis : piano solo / Ernst Widmer. -- 1. -- São Paulo : Ricordi , c1967-. -- 5 v. of music ; 32 cm. -- (BA46357433) ; http://ci.nii.ac.jp/ncid/BA46357433
Other Title(s): Ludus brasiliensis : 162 peças progressivas para piano. -- Author Heading(s): Widmer, Ernst