New challenges for the organization of night and shift work : proceedings of the XIII International Symposium on Night and Shift Work, 23-27 June 1997, Finland
New challenges for the organization of night and shift work : proceedings of the XIII International Symposium on Night and Shift Work, 23-27 June 1997, Finland
New challenges for the organization of night and shift work : proceedings of the XIII International Symposium on Night and Shift Work, 23-27 June 1997, Finland
New challenges for the organization of night and shift work : proceedings of the XIII International Symposium on Night and Shift Work, 23-27 June 1997, Finland