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Sinkiang : pawn or pivot?
Whiting, Allen S., (1958)
La Bolivie et les compagnies productrices de minerai d'étain
Bernard, Jean-Pierre, (1967)
International commodity agreements
Haviland, William E., (1963)
The diagnosis of multicollinearity
Gilbert, C. L., (1978)
The original Philips curve estimates
Gilbert, C. L., (1976)
Short-cut methods of estimating per capita GDP and tentative results on the distribution and growth of world GDP
Gilbert, C. L., (1982)