Freund, John E. Elementary Business Statistics : The Modern Approach [by] John E. Freund [and] Frank J. Williams. - Englewood Cliffs, N.J., Prentice-Hall [1964] - 478 p. illus., tables. 24 cm. Bibliography: p. [429]-434. LCCN: 64010228 Subjects--Topical Terms: Statistics. LC Class. No.: HA29 / .F683 Dewey Class. No.: 311.2 / FRE