Grateful acknowledgement is made to the following sources:
Photographs and images
Girl using stick to grind food in a bowl:(Accessed 2008)
People using hoes in a field: http://www.ifad.org/ photo/ images/ 10190_d3s.jpg (Accessed 2008)
Series of five pictures showing pottery being made in Mpraeso, Ghana: The full article can be found at http://www.infohub.com/ forums/ showthread.php?t=766 (Accessed 2008).
Every effort has been made to contact copyright holders. If any have been inadvertently overlooked the publishers will be pleased to make the necessary arrangements at the first opportunity.