Sanchez, Custodiosa A. Methods and techniques of research Custodiosa ancheta Sanchez -- Rev. ed. -- Manila: Rex Book Store, 1986. xiii, 229p. ; 23 cm. -- Methods and Techniques of research 971-23-0355-1 . - Sanchez, Custodiosa A. . Includes glossary and indexes. ISBN: 971-23-0355-1 Subjects--Topical Terms: Research.Dewey Class. No.: Fil 001.4 Sa511 1986