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A short manual on sampling
(1960)
Sampling techniques
Cochran, William G., (1953)
Théorie et pratique des sondages
Desabie, Jacques, (1966)
The diffusion of innovations over time : a model study
Zackrisson, Uno, (1971)
The distribution of "student's" t in samples from individual non-formal populations
Zackrisson, Uno, (1959)
Deciding about the uncertain: The use of forecasts as an aid to decision-making
Lindberg, Erik, (1991)