Studies on the food of the east Greenland ptarmigan, especially in its relation to vegetation and snow-cover / by Paul Gelting. Gelting, Paul Emil Elliot, 1905- [from old catalog] Treaarsekspeditionen til Christian X's land (1931-1934) Ptarmigans Food Greenland. QL696.G2 G4 591.53 GES Includes Bibliography. København : I kommission hos C. A. Reitzels forlag, c1937. c1937. 1937 Text ix, [2], [5]-196 p. : eng Greenland.