TY  - GEN
AU  - Thomas, Alan
TI  - Modelling and Community Decisions: System Modelling Units 12 & 13 
SN  - 0335060579
U1  - 003,THO 
PY  - 1975///
PB  - The Open University Press
KW  - System
N1  - Individual and Community Preferences (Page-8), Discount Rates the Time Value of Money and the Opportunity Cost of Money (Page-17), Estimating Effect and Forecasting Demand models and Gravity Models (Page-21), Social Evaluation of Non Market Benefits and Costs (Page-27)
ER  -