Naven.

Abstract

This article is only available in the PDF format. Download the PDF to view the article, as well as its associated figures and tables. Abstract This book was published first some twenty years ago. The main feature of this edition is a new epilogue in which the problems explored in the book are again examined but in a different frame of reference. In this manner, the epilogue is a bit like psychotherapy, in which data already known are reexamined and reinterpreted in the light of a more...