Author
Gregory, J. W. (John Walter), 1864-1932
12
Markopoulos, Gregory J.
2
British Museum (Natural History). Dept. of Geology
1
British museum (Nat. hist.). Dept. of Geology
1
Conway, William Martin, Sir, 1856-1937
1
Geological Survey of India
1
Goalwin, Gregory J., author
1
Gregory, J.
1
Guerry, Emile, 1891-1969
1
Hutchinson, H. N. (Henry Neville), 1856-1927
1
Smith, Arthur Donaldson, 1866-1939
1