rukopis tektonický dobytie bicykel pierre lallement animácie Detský palác lock
Lallement's Velocipede [Early bicycle with pedals on the front wheel] from The American bicycler: a manual for the observer, the learner, and the expert by Pratt, Charles E. (Charles Eadward), 1845-1898. Publication
Who invented the Bicycle? - Pierre Michaux or Pierre Lallement?