GREGORY, J.W. and C.J. GREGORY. The geological and physical geography of Chinese Tibet, and its relations to the mountain system of south-eastern Asia, from observations made during the Percy Sladen expedition, 1922. The Royal Society 1925
4to. Original paper wrapper; pp. 171 - 298, folding map and 3 photographic plates, text illustrations; fine.
Reprinted from the Philosophical Transactions of the Royal Society Series B, Vol 213.