Proportional formulae, bi-complex and tri-complex, or A system, algebraically derived from the nature of proportionals, for the facilitation of that process in arithmetic commonly called the rule of three /
by John Lee.

APA Citation

Lee, J. (1837). Proportional formulae, bi-complex and tri-complex, or A system, algebraically derived from the nature of proportionals, for the facilitation of that process in arithmetic commonly called the rule of three. Cambridge, Mass.: Metcalf, Torry and Ballou.

MLA Citation

Lee, John. Proportional Formulae, Bi-complex And Tri-complex, Or A System, Algebraically Derived From the Nature of Proportionals, for the Facilitation of That Process In Arithmetic Commonly Called the Rule of Three. Cambridge, Mass.: Metcalf, Torry and Ballou, 1837.