MacDonald,, Marion E.
Pratical statistics for teachers : (a text and work book) / Marion E. MacDonald
Pratical statistics for teachers : (a text and work book) / Marion E. MacDonald
. - [E.U.A.] : The Macmillan Company, 1935
. - 176 p. : il. 28 cm
37:519.2
519.2:37