TY  - BOOK
AU  - Green, J.A..
TI  - Sets and Groups / 
SN  - 0-7100-4356-2
U1  - B13 
PY  - 1984///
CY  - London E.C. 4V 5EL : 
PB  - Routledge & Kegan Paul Ltd , 
KW  - Sets and Groups
ER  -