Writing

2025

Mister Blot’s Academy. Part 2 … Novel

2024

Kleks Academy … Characters

2001

Mister Blot's Triumph … Novel

1988

Mr. Blot in Space … Characters

1986

Travels of Mr. Blot … Novel

1984

Mister Blot's Academy … Author

1980

Niezwykłe przygody Pana Kleksa … Author

1962

The Two Who Stole the Moon … Screenplay

1934

Parada rezerwistów … Writer