Spearman-Brown formula

bawze diphenylamino-azo-p-benzene sulfonic acid EMP fare-payings general average disbursement guignardia polygoni-chinensis krei labium-hypopharynx malveaux octachloropropane parasitic prosopopagus pentadactyloid Prader-Willi(syndrome) preteens Salmonella lexington salty fish shot after shot steepled study randomization date/time tape swap