作者
South Dakota Agricultural Experiment Station
2
South Dakota State University. Rural Sociology Department
2
Barber, R. C.
1
Barnes, G. C.
1
Coffman, Lotus Delta, 1875-1938
1
Conferência económica do impéro colonial português
1
Croften, R. M.
1
Fanshawe, H. C.
1
Jack, J. C.
1
Lawrence, A. J.
1
Minnesota. Committee on Land Utilization
1
Penny, J. D.
1
Porter, L. A. S.
1
Portugal
1
Purser, W. E.
1
Ritchie, J. G.
1
Rivett-Carnac, J. H. (John Henry), 1838-1923
1
Smith, W. H.
1
Taverner, E. L.
1
Uganda
1
Valdez, José d'Ascensão
1
Wallis, Henry Richard, 1866-
1
Zon, Raphael, 1874-1956
1