Lithuanian ''bajoras'' and Grand Duchy of Lithuania artillery expert Kazimieras Simonavičius is a pioneer of rocketry, who has published ''Artis Magnae Artilleriae'' in 1650 that for over two centuries was used in Europe as a basic artillery manual and contains a large chapter on caliber, construction, production and properties of rockets (for military and civil purposes), including multistage rockets, batteries of rockets, and rockets with delta wing stabilizers. A botanist Jurgis Pabrėža (1771-1849), created first systematic guide of Lithuanian flora ''Taislius auguminis'' (''Botany''), written in Samogitian dialect, the Latin-Lithuanian dictionary of plant names, first Lithuanian textbook of geography.