TY  - BOOK
AU  - Harford, Nicola
AU  - Baird, Nicola
TI  - How to make and use visual aids
SN  - 0435999591
U1  - G 371.335 
PY  - 1997///
CY  - Oxford 
PB  - Heinemann, 1997.
KW  - Visual aids.
KW  - Visual communication
ER  -