00927nam a2200289 i 450099100132110970753620020507114417.0960521s1968 uk ||| | eng b10204325-39ule_instLE00645819ExLDip.to Fisicaita53.0.634621.55TJ940Dennis, N.464445Vacuum system design /N. Dennis, T. HeppellLondon :Chapman and Hall,1968xi, 223 p. :ill. ;25 cm.Vacuum pumpsVacuum technologyHeppell, T..b1020432521-09-0627-06-02991001321109707536LE006 53.0.634 DEN12006000097215le006-E0.00-l- 00000.i1025239327-06-02Vacuum system design192227UNISALENTOle00601-01-96ma -enguk 01