519.1
    F
           Fisher , Arne . The mathematical theory of probalitites and its application to frequency curves and statiscal methods , by Arne Fisher . Tr . From the Danish by Charlotte Dickson...and William Bonynge...with introductory notes by M . C . Rorty and F .W . Frankland ...v . 1- 2d . ed. , greathly enl . New York , The Macnillam company , 1926 . v . diagrs . 22 cm .