Sanchez, Custodiosa A. Methods and techniques of research Custodiosa Ancheta Sanchez. -- 3rd ed. -- Manila: Rex Book Store, 1998. xi, 263p. ; 23 cm. -- Methods and Techniques of research 971-23-2301-3 . - Sanchez, Custodiosa A. . Includes glossary and indexes. ISBN: 971-23-2301-3 Subjects--Topical Terms: Research.Dewey Class. No.: Fil 001.4 Sa511 1998