RT Journal Article SR Electronic T1 Human Nature: Its Development, Variations and Assessment JF British Journal of Industrial Medicine JO Br J Ind Med FD BMJ Publishing Group Ltd SP 135 OP 135 DO 10.1136/oem.10.2.135 VO 10 IS 2 A1 Backett, E. Maurice YR 1953 UL http://oem.bmj.com/content/10/2/135.1.abstract AB