Communication by visual means.
Behaviour for example: written with Jan van Lieshout; this book deals with the methods used at De Boerderij, a homecare farm for deaf. Also available is a paperback created and translated in English and French with a separate chapter for Africa.
Wiljo Oosterom and Jan van Lieshout
Published by Foundation op Kleine Schaal, Voorhout
ISBN 90 74830 25 0
Obtainable as well in reduced version in English and French