Socio-Economic Planning Sciences
Socio-Economic Planning Sciences > 2009 > 43 > 2 > 92-101
Socio-Economic Planning Sciences > 2009 > 43 > 2 > 121-130
Socio-Economic Planning Sciences > 2009 > 43 > 2 > 102-110
Socio-Economic Planning Sciences > 2009 > 43 > 2 > 111-120
Socio-Economic Planning Sciences > 2009 > 43 > 2 > 131-139