00876nam a2200253 i 450099100131490970753620020507114310.0970308s1976 il ||| | eng b1020345x-39ule_instLE00645707ExLDip.to Fisicaita53.0.63453.9.1Cherepnin, N.464397Treatment of materials for use in high vacuum equipment /N. CherepninHolon :Ordentlich,1976v. :ill.Vacuum.b1020345x21-09-0627-06-02991001314909707536LE006 53.0.634 CHE12006000010184le006-E0.00-l- 00000.i1025137627-06-02Treatment of materials for use in high vacuum equipment192602UNISALENTOle00601-01-97ma -engxx 01