TY  - BOOK
AU  - Inglis,John
AU  - Lewis,Roger
ED  - National Extension College.
TI  - Clear thinking
T2  - Learning skills series
SN  - 9780003223477 (pbk) :
U1  - 160 20
PY  - 1993///
CY  - London
PB  - National Extension College
N1  - Bibliography: p74
ER  -