Crédits photo :
© CNIL : p. 7, 15, 23, 24, 26, 28, 39, 47, 55, 57, 58, 60, 62, 64, 66, 69, 71, 72, 73, 79.
© Fotolia : p. 11, 13, 14, 15, 25, 27, 55, 63, 66, 71, 74.
© Tralalere 2007 : p. 56.

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