TY  - GEN
AU  - Asche, David
AU  - Holroyd, Fred
TI  - Groups & gemoetry: unit GE4
SN  - 0749221720
U1  - 512.2 
PY  - 1994///
CY  - Milton Keynes
PB  - The Open University
KW  - Groups and group theory
ER  -