TY  - BOOK
AU  - Blyth, T.
AU  - Robertson, E.
TI  - Algebra Through Pactice : Sets, Relations and Mappings : Books
SN  - 0521272858
PY  - 1984///
CY  - Cambridge
PB  - Cambridge University Press
KW  - Algebra - Problems, Exercises Etc
ER  -