MAP20110035259 Sadler, Erin M. The Personal lift-assist device and lifting technique: a principal component analysis / Erin M. Sadler, Ryan B. Graham, Joan M. Stevenson En: Ergonomics : the international journal of research and practice in human factors and ergonomics. - Oxon [United Kingdom] : Taylor & Francis, 2010- = ISSN 0014-0139. - 04/04/2011 Volumen 54 Número 4 - abril 2011 I. Graham, Ryan B. . II. Stevenson, Joan M. .