Charte de Vienne : 1972 / Bureau International du Tourisme Social (BITS)
COTA(S): 1243
Tourism and Culture : report by the commission on "The Education and Culture" / Marcel Vandewiele
COTA(S): 1222
The development of camping-caravanning in the next decade : manifesto / Bureau International du Tourisme Social (BITS)
COTA(S): 1242