This volume unites six contributions on morphonotactics of consonant clusters and its difference to phonotactics (in a narrow sense). Morphonotactics comprises that part of phonotactics (in the large sense) which is due to interaction with morphology. It deals prototypically with clusters which are due to morphological concatenation as in the word-final consonant cluster in Ger. (er/sie) mach-t '(he/she) make-s', which is morphonotactic vs. its phonotactic homophonous equivalent Macht 'power'. The opening chapter introduces into the area of morphonotactics and into the following five chapters which deal with German or French morphonotactics or both. The first represents the first corpuslinguistic analysis of German morphonotactics based on a large electronic corpus, the second investigates phonetic processing in both languages, the remaining three, equally distributed between both languages, with the impact of (mor)phonotactics on processing and language acquisition. Thus, this volume unites phonological, morphological, phonetic, psycholinguistic, corpuslinguistic and typological perspectives integrated into a series of experimental approaches. The volume publishes selectively results of a bilateral research project funded by the Agence Nationale de la Recherche (ANR) and the Austrian Science Fund (FWF).