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Price effects of a lack of speculation
Gray, Roger W., (1967)
Returns in over-the-counter stock markets
Jessup, Paul Frederick, (1973)
Jewish population studies
Robison, Sophia M., (1943)
Wool futures trading in Australia : further prospects
The attack upon potato futures trading in the United States
Gray, Roger W., (1964)
The characteristic bias in some thin futures markets
Gray, Roger W., (1983)