De Leon, Hector S. The Law on Obligations and Contracts/ Hector S. De Leon - twelfth Edition - Quezon City, Philippines: Rex Book Store, c2021. - xxii, 453 pages : illustrations ; 23cm. ISBN: 978-621-04-0430-2 Subjects--Topical Terms: 1. Contracts-- Philippines 2. Obligations (law)-- Philippines Dewey Class. No.: 346.07 D346t 2021