Walpole, Ronald E. Elementary statistical concepts / (Print Resources). By Ronald E. Walpole. - New York : Macmillan, c1976. - viii, 231 p. : ill. ; 24 cm. Includes Index and References. ISBN: 0029798108 Source: B-7757 Subjects--Topical Terms: Statistics. LC Class. No.: HA29 / .W34