شرح على السرالمغتبط في المخمس الخالي الوسط

Instructions on how to use the celebrated magic table of 25 squares commonly known in Arabic as almukhammas for the resolution of certain problems. Extent and format of original material: Watermarked paper with three crescents. 20 pages 145x110mm. Physical characteristics of original: some pages are missing in the beginning and the end. Also some damage by humidity