Czech inventors
The History of Contact Lenses (Article)
The History of Contact Lenses
Biography (in Czech) converter
Franti�ek K�i��k - �esk� elektrotechnik a vyn�lezce (obloukov� lampa) | �ivotopis
History of propeller inventions propeller
Who invented the ship's propeller?
Short biography petrol
Josip Ressel
Comprehensive biography non
Istria on the Internet - Relevant Non-Istrians
Biography (in Czech) libri list
KDO BYL KDO v na�ich d�jin�ch do roku 1918
Very short biography dresden krone timeline english glossary
Timeline - Krone-Sammlung
A page on Wichterle at the Czech Academy of Sciences
Description of photogravure
Early Photographic Processes - Photogravure
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Contact lens , František Křižík , Josef Ressel , Karel Klíč , Otto Wichterle , Photogravure , .
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