por Blaxter, Loraine, 1945- [autor] | Hughes, Christina, 1952- [autor] | Tight, Malcolm [autor] | Ventureira, Gabriela [traductor] | Blaxter, Loraine, 1945-. How to research.
por Booth, Wayne C [autor] | Colomb, Gregory G [autor] | Williams, Joseph M [autor] | Alvarez, Jose A [traductor].