Calendar: 1975-1976 Page 527

Annual Report of the Delegacy civ Richardson 'The stratigraphic utilization of some Silurian and Devonian miospore species in the Northern Hemisphere Intemat Symp on Belgian micro- palaeontological limits Namur September 1974 Publication No 1-13 with Edwards 'Lower Devonian Dittonian plants from the Welsh borderland Palaeontology 17 311-24 1974 department of mathematics Barnard 'Commutative rings with operators Galois theory and ramification Proc London Math Soc 28 274-90 1974 Beynon 'Combinatorial aspects of piecewise linear functions London Math Soc 719-27 1974 Burgoyne 'How best to arrange supports for book shelves Mathematical Spectrum 25-6 1973-74 'Numerical approximations for rectangular plates Mathematics Student 41 973 Contributed to reviews in the Times Higher Education Supplement 137 17 974 Davies 'Second law of thermodynamics Nature 248 366 1974 with Taylor 'Do black holes really explode Nature 250 5461 974 Erdos 'On the trace of trace class operator Bull London Math Soc 47-50 1974 Reviews in Mathematical Reviews and the Times Higher Educational Supple- ment Frohlich 'The Picard Group of non-commutative rings in particular orders Trans Amer Math Soc 180 1-45 1973 'Artin Root numbers conductors and representations for generalised quaternion groups Proc London Math Soc 28 402-38 1974 Furtado-Coelho 'Functors associated with varieties of universal algebras Rev da Fac de Ciencias Lisboa XV 1-36 1974 Harvey 'Chabauty spaces of discrete groups Ann of Math Studies 7g 239-46 1974 Higgins and Lyndon 'Equivalence of elements under automorphisms of free groups London Math Soc 254-8 1974