Professor in pursuit of invention, the crazy adventure of aegean all books in the series -hydrogen skateboard- attention, we are in space- lost kangaroo- dinosaurs come to life - ancient ramadans - make a wish-a parrot on mars - fearless coward... 10 pieces to be sold at the campaign price excess stock is available. listed price is valid until 16 october 2026. This publication is ideal for readers seeking insightful and educational content. Prepared by experienced authors and printed with high-quality materials. Great for students, educators, and curious minds.