Abstract
Algebraic Preliminaries. Set Theory. Slender Modules. Almost Free Modules. Pure-Injective Modules. More Set Theory. Almost Free Modules Revisited. Countably-Separable Groups. Quotients of Products of the Integers. Iterated Sums and Products. Topological Methods. The Structure of EXT. The Black Box and Endomorphism Rings. Dual Groups. Open Problems. Bibliography. Index.
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