A Oneworld Book
First published by Oneworld Publications 2002
Second edition published 2009
This revised third ebook edition published 2017
Copyright © Abraham Ascher, 2002, 2009, 2017
The moral right of Abraham Ascher to be identified as the Author of this work has been asserted by him in accordance with the Copyright, Designs and Patents Act 1988
All rights reserved
Copyright under Berne Convention
A CIP record for this title is availablefrom the British Library
ISBN 978-1-78607-142-2
eISBN 978-1-78607-143-9
Typeset by Jayvee, Trivandrum, India
Oneworld Publications
10 Bloomsbury Street
London WC1B 3SR
England