Sanchez, Custodiosa A.  <br/><br/>Methods and techniques of research  - Manila  Rex Book Store  ©1980  - xii, 211 pages ;  22 cm <br/><br/><label>ISBN: </label>9712303551 <br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Research<br/><br/><label>LC Class. No.: </label>H62  / .S33 1980