(online) The Linguistics section has chapters on Articulatory Phonetics, Phonology, Nonlinear Phonology, Morphophonology, and Suprasegmentals, with lists for further reading. An excellent starting point.
Koerner reference atlases G3201.E3 2005 .W67 Book and CD combination displaying the structural properties of the world's languages. 142 world maps and numerous regional maps display the geographical distribution of features of pronunciation and grammar. The section on morphology includes maps and data on inflectional formatives, affixation, reduplication, and much more. The accompanying CD allows you to zoom in on & customize the maps, to display bibliographical sources, and to establish correlations between features.
This website hosts two complementary databases. The Typological Database examines the different types of defective paradigms according to various typological parameters, while the 100-language Survey looks for plausible exampleswithin a controlled sample, in order to gain a picture of how prevalent defectiveness actually is in the languages of the world." from the Surrey Morphology Group, Department of English, University of Surrey