Proceedings of Symposium on Phytogeography and Vegetation Mapping held at Pondicherry, 15-18 December, 1968 - Symposium on Phytogeography and Vegetation Mapping (1968 December 15-18 : Pondicherry, India); Chatterjee, S. P.; Legris, P.; Das Gupta, S. P.; National Committee for Geography(Calcutta, India); International Geographical Congress 1968 : Pondicherry, India) (Calcutta : National Committee for Geography, 1971)
At the head of the title page: 21st International Geographical Congress
Keywords: Phytogeography -- India -- Pondicherry -- Congresses; Vegetation mapping -- India -- Pondicherry -- Congresses