1. Infinite Abelian Groups, vol. 1;Fuchs,1970
2. Residual properties of infinite soluble groups;Gruenberg;Proc. London Math. Soc. (3),1957
3. P. Hall, Nilpotent Groups, Lectures at Canad. Math. Congress, 1957. Re-issued as Queen Mary College Math. Notes, London, 1969. Also contained in the Collected Works of Philip Hall, Clarendon Press, Oxford, 1988.
4. Varieties of Groups;Neumann,1967
5. Finiteness Conditions and Generalized Soluble Groups, 2 vols.;Robinson,1972