Snedecor, George W. Statistical methods applied to experiments in agriculture and biology - 3 ed. - Ames, Iowa : State College, 1940 - 422 p. LCCN: 62686 Subjects--Topical Terms: Agricultura--Metodos estadisticos.BiometrÃa.EstadÃstica. Dewey Class. No.: 311.2 / S54