Authors: Boekhout, T. --- Robert, V. --- Smith, M.T. --- Stalpers, J. --- Yarrow, D. --- et al. Boer, P. --- Gijswijt, G. --- Kurtzman, C.P. --- Fell, J.W. --- Guého, E. --- Guillot, J. --- Roberts, I.
ISBN: 9075000472 Year: 2000 Publisher: Paris Amsterdam UNESCO. ETI.