Russell, Bertrand . Our knowledge of the external world : as a field for scientific method in philosophy / Bertrand Russell ; introduction by John G Slater. - London : Routledge , 1995. - 251p. : ill. ; 22cm . Include index ISBN: 0415096057 UKP 3.25 Subjects--Index Terms: ESISTEMOLOGY Dewey Class. No.: 121 / RUS/O