Greenberg's (1954) concept of a 'Khoisan' language family, while heartily embraced by non-specialists, has been harshly criticized by linguists working on these languages. Evidence for Greenberg's hypothesis has proved to be seriously insufficient and little progress has been made in the intervening years in substantiating his claim by means of the standard comparative method. This volume goes beyond "Khoisan" in the linguistic sense by exploring a more complex history that includes multiple and widespread events of language contact in southern Africa epitomized in the areal concept 'Kalahari...