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Elementary statistical analysis
Wilks, Samuel S., (1952)
Mathematical methods of statistics
Cramér, Harald, (1957)
Statistical methods
Snedecor, George W., (1967)
Human judgement and social policy : irreducible uncertainty, inevitable error, unavoidable injustice
Hammond, Kenneth R., (1996)
Onward
Hammond, Kenneth R., (1992)
Policy: An aid for decision making and international communication
Adelman, Leonard, (1977)