What is regional science? Surely anyone posing this question would be well advised to consult a recent introduction to the subject by no less a figure than the father of the discipline. By the time the reader gets through page five he will have discovered that there are at least thirteen definitions of regional science. Moreover, according to Isard, "It is clear from the diversity of definitions that no single one can be considered the best or most complete. Each researcher and student will need to develop or synthesize his own definition after having read this book and other studies."