Fernández, Oscar E., The calculus of happiness : how a mathematical approach to life adds up to health, wealth, and love / Oscar E. Fernandez - xii, 159 páginas : ilustraciones ISBN: 9780691168630 Subjects--Topical Terms: Matemáticas--Obras de divulgación LC Class. No.: QA93 / F47 Dewey Class. No.: 650.101/51