TY  - BOOK
AU  - Layard Richard
TI  - Cost benefit analysis:  Selected readings   
T2  - Penguin Modern Economics Readings. Ed by B J McCormick
U1  - X65291, L2/TD3 
PY  - 1972///
CY  - Harmondsworth
PB  - Penguin Books         
N1  - Bibliography at the end of each chapter
ER  -