00420nam a2200157Ia 4500 231011s1989 xx 000 0 und d 9780813815602 eng 519.5 GEO/WIL George Waddel Snedecor, William Gemmell Cochran Statistical Methods 8th Ed. 1989 Delhi. Affiliated East West Press 1989 xy, 503 600 879830 879830