00262nam a2200109 a 450000500170000002000150001708200200003210000160005224500290006826000400009730000150013720251203090533.0  a0408014857  a621.55,bD, wes  aWeston G.F.  aUltrahigh Vacum practice  aLoNew DelhionbButterworthsc`a1985  a288p, 22cm