Barnodaj - Progress Organization (1971)


Progress Organization (alt cover)


Barnodaj - Maugli (1975)


Progres 2 - Dialog S Vesmirem (1979)


Progres 2 - Tretí kniha dzunglí (1982)


Progres 2 - Mozek (1984)


Progres 2 - Zmena (1988)


Progres 2 - Otrava krve (1990)