Backhouse, John K. Statistics : an introduction to tests of significance / J.K. Backhouse. - London : Longman, 1967 [impression 1978]. - ix, 197 p. : ill. ; 22 cm. - Mathematical topics . Includes index. ISBN: 0582317541 Subjects--Topical Terms: Statistics. Dewey Class. No.: 519 / BAS 1978