Legality of Cannabis by U.S. Jurisdiction 4th5th6th7th8th9th10th11th12th13th14th See also: Category:9th-century scientists Pages in category "9th-century inventors" The following 5 pages are in this category, out of 5 total. This list may not reflect recent changes. B Banū Mūsā brothersF Abbas ibn FirnasK Al-KhwarizmiR Abu Bakr al-RaziS Shouwen