[Tak Ming Kwa]

The Fundamental Operations in Bead Arithmetic: How to Use the Chinese Abacus

Hong Kong: s.n. Soft cover. 18mo. Very Good. Item #011235

[196-?] Orig. illustrated wrappers, staple bound. 52 pp. Toning and foxing to covers, creasing to upper corner of rear cover. 0.

Price: $24.00