The editors are pleased to present to the nuclear com- munity our new-look annual review. In its new look, with Plenum our new publisher, we may hope for a more rapid pre- sentation to our audience of the contents for their consi- deration; the contents themselves, however, are motivated from the same spirit as the first nine volumes, reviews of important developments in both a historical and an anticipa- tory vein, interspersed with occasional new contributions that seem to the editors to have more than ephemeral interest. In this volume the articles are representative of the editorial board...