TY - BOOK ED - Unesco TI - Methods for development planning: scenarios, models and micro-studies PY - 1981///] CY - [Paris PB - Unesco KW - Economic development KW - Mathematical models N1 - "Basedon Seminar-Workshop on Global Modelling Techniques and Socio-economic Indicators neld at the Institute of Development Studies at the University of Sussex, 1978 ER -