00612pamaa2200193 4500 0000046019 20121206090000.0 090828 eng 9780123747464 QA371 RIC 2009 Ricardo A modern introduction to differential equations Henry J. Ricardo. 2nd ed. Amsterdam ; Boston: Academic Press/Elsevier, 2009. xv, 518 p.: ill.; 25 cm. FAS Includes bibliographical references and index Differential equations http://www.academicpress.com