In addition to the central dialects, several ‘peripheral dialects’ of the second millennium are attested; these are variant written forms of Akkadian, influenced by different local languages (Susa, Boghazköy, Alalaḫ, Nuzi, Ugarit, and various local types in the Amarna texts). d. The texts preserved in Akkadian are of many types: historical and chronographical texts and census reports; treaties and other political documents; business and administrative records; codes of law; witnessed and sealed