National Symposium on Vacuum Technology Transactions.National Symposium on Vacuum Technology Transactions (8th : 1961 : Wash., D. C.)：combined with the 2nd international congress on vacuum science and technology．V.1.Pergamon,1962.
National Symposium on Vacuum Technology Transactions (8th : 1961 : Wash., D. C.)：combined with the 2nd international congress on vacuum science and technology．V.1
National Symposium on Vacuum Technology Transactions.Pergamon,1962.
National Symposium on Vacuum Technology Transactions.National Symposium on Vacuum Technology Transactions (8th : 1961 : Wash., D. C.)：combined with the 2nd international congress on vacuum science and technology．V.2.Pergamon,1962.
National Symposium on Vacuum Technology Transactions (8th : 1961 : Wash., D. C.)：combined with the 2nd international congress on vacuum science and technology．V.2
National Symposium on Vacuum Technology Transactions.Pergamon,1962.
