The present proceedings include: (I) all the invited and contributed papers which, with a
few exceptions, were actually read during the symposium; (II) those comments and dis-
discussions which followed each of the presentations and which we thought would be of
general interest and hence worth registering; and (III) a short summary of two post-
symposium discussion meetings (PSDM) which were held on the 1st of September con-
concerning the Aharonov-Bohm effect and neutron interferometry. All this has been sub-
subjected to refereeing.