"18th or 19th century" . "18th century-early 19th century" . "18th century-19th century" . "siglos 18-19" . . "1701=1900" . "1701 / 1900" . "Late 18th(?)\u201319th century" . "18th\u201319th century" . "18th or early 19th century" . "18th century or early 19th century" . "18th century - 19th century" . . . "late 18th\u201319th century (?)" . "late 18th\u201319th century" . "18th/19th century" . "18th century to early 19th century" . "1701/1900" . "18th century to 19th century" . . "18th\u201319th century" . "early 18th century-19th century" . "Late 18th\u201319th century" . . "segles 18-19" .