804,550 INTERNATIONAL Fourth International Scientific Conference WWDU [Work With Display Units]'94 : University of Milan October 2-5, 1994 : book of short papers / A. Grieco [et al.] eds. - Milan : Institute of Occupational Health "Clinica del Lavoro L. Devoto" University of Milan, 1994. - 3 vol. ; 30 cm Vol.l s Monday, October 3, 1994. - 224 s. pag. varia s il., wykr. Vol.2 : Tuesday, October 4, 1994. - 334 s. pag varia s il., wykr. Vol.3 : Wednesday, October 5, 1994. - 223 s. pag. varia : il., wykr.