Ross Allen Beaumont (In Memoriam) -- Modular group algebras and simply presented groups -- Abelian automorphism groups of countable rank -- Transitivity and full transitivity over subgroups of abelian p-groups -- Subgroups of p5-bounded groups -- Groups acting on modules -- Some mixed abelian groups as modules over the ring of pseudo-rational numbers -- The Baer-Kaplansky theorem for direct sums of self-small mixed groups -- Finite rank Butler groups with small typesets -- Normal forms of matrices with applications to almost completely decomposable groups -- Admissible matrices as base changes of B(1)-groups: a realizing algorithm -- Butler modules over 1-dimensional Noetherian domains -- Completely decomposable summands of almost completely decomposable groups -- Some matrix rings associated with ACD groups -- Stacked bases for a pair of homogeneous completely decomposable groups with bounded quotient -- Separability conditions for vector R-modules -- Almost disjoint pure subgroups of the Baer-Specker group -- Abelian groups mapping onto their endomorphism rings -- Purity and Reidโ{128}{153}s theorem -- Basic subgroups and a freeness criterion for torsion-free abelian groups -- Absolutely rigid systems and absolutely indecomposable groups -- Around nonclassifiability for countable torsion free abelian groups -- On the compact-open topology of Ext(C,A) -- Direct decompositions of LCA groups -- Realizing automorphism groups of metabelian groups -- On the class semigroups of Prรผfer domains -- Uniform modules, ?-invariants, and Ziegler spectra of regular rings -- Locally simple objects -- On purely extending modules -- The number of submodules