N=P P=17672 COPAC ECCO ref=COPAC ref=ECCO Jacob de Castro Sarmento The merchant's assistant, and clerk's instructor ensino contabilidade matemática yING London Printed for the Author, and sold by M. Milles 1742 y17 y174 JACOB DE CASTRO SARMENTO THE MERCHANT'S ASSISTANT, AND CLERK'S INSTRUCTOR ENSINO CONTABILIDADE MATEMATICA LONDON PRINTED FOR THE AUTHOR, AND SOLD BY M. MILLES JACó INSTRUTOR LONDRES AUTOR