Agriculture in Semi Arid Environments formatIsbn:Softcover 9783642673306 It contributes to the growing formatIsbn:Softcover 9781493953370 It contributes to the growing interest in gradience and variation in theoretical phonology by combing research on the factors underlying variability and systematic quantitative results with theoretical phonological considerations 9 weitere Kapitel widmen sich Einzeldarstellungen zu den linguistischen Untersuchungsebenen (von der Phonologie bis zur Pragmatik) sowie zu typologischen Increasing human populations have resulted in greater demands on semi arid zones for providing human susten ance and the possibility that this may enhance desertification is a grave concern and is relevant to the large areas of the world where rainfall is limiting and where water is not available for irrigation