[Mathematics] Tagliente, Giovanni Antonio. Libro Dabaco Che Insegna a Fare Ogni Ragione Mercadantile. [Venice], n.d., [1535?]. Old paper wraps. 8vo. 77 leaves. A-N3; O3-V4 [A1 (title) is probably a later facsimile; O1 is supplied, but probably from another copy, with a corner tear and loss of text]. Many mathematical and pictorial woodcuts, large decorative initials, head- and tail-pieces. Several leaves at rear with closed gutter and horizontal tears. Defective and sold as is, but still an opportunity to obtain a coveted Renaissance work of popular mathematics.