TY  - BOOK
AU  - Green,J.A., x
AU  - x
TI  - Sets and groups: x
SN  - x
U1  - 517.521/GRS 
PY  - 1965///
CY  - Lond.
PB  - E.L.B.S.
KW  - Calculus
N1  - x
ER  -