Jan Krejčí

Jan Krejčí (28 February 1825 – 1 August 1887) was a Czech geologist, educator, journalist and politician from Bohemia. He wrote the first Czech textbook of geology in 1860, whose revised edition was released again in 1877 under the title ''Geologie čili nauka o tvarech zemských se zvláštním ohledem na krajiny Československé''. Provided by Wikipedia