CATALDI ANTONIO PIETRO. PRIMA PARTE DELLA ARITMETICA, OVERO ELEMENTI PRATICI DELLI NUMERI - SECONDA PARTE DELLA PRATICA ARITMETICA. Bologna 1602-1606

In small folio 

19th century cardboard
12, 148; 4, 151.1 pp Complete
Two works bound together
Slightly yellowed paper specimen with insignificant restorations and small woodworm flowers on the margin, however well preserved.
Original editions which were followed by two other parts in the years 1616 and 1617.
“This work is the most complete treatise on arithmetic to date”
Cataldi's works are rare and rather sought after.