European and Atlantic co-operation : the Dutch attitude / with a forew. by J. M. A. H. Luns ; contrib. of E. H. van der Beugel ... [et al.] ; ed. by L. G. M. JacquetEuropean and Atlantic co-operation : the Dutch attitude / with a forew. by J.M.A.H. Luns ; contrib. by Ernst Hans van der Beugel ... [et al.] ; contrib. by E.H. van der Beugel ... [et al.]