De Leon, Hector S. Comments and Cases on Obligations and Contracts / Hector S. D e Leon, Hector M. De Leon, Jr. - Fourth edition 2003. - Manila, Philippines : Rex Book Store, c2003. - xxxvi, 914 pages : 24 cm. ISBN: 9712338894 Subjects--Personal Names: De Leon, Hector, Jr. M. LC Class. No.: KF5625.2 / D38 2003