Reikningsbók.

• Main Author: Thoroddsen, Thórður Jónas, 1856-
• Format: Text
• Language: unknown
• Published: Reykjavík, á forlags K.O. Þorgrímssonar 1884
• Subjects: Reykjavík
• Online Access: http://hdl.handle.net/2027/hvd.32044084757913

"Svör við dæmi í reikningsbók. Reykjavík, 1884", pp. xii, at end. Mode of access: Internet.