http://www.lepnums.lv/lv/cilveki/42-inzenieris-izgudrotajs/108-aleksandrs-leitners-1864-1923.html https://ru.wikipedia.org/wiki/%D0%9B%D0%B5%D0%B9%D1%82%D0%BD%D0%B5%D1%80,_%D0%90%D0%BB%D0%B5%D0%BA%D1%81%D0%B0%D0%BD%D0%B4%D1%80_%D0%90%D0%BB%D0%B5%D0%BA%D1%81%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B2%D0%B8%D1%87
pirms 8 gadiem
500