International encyclopaedia of sustainable development; vol.20 /
- 1st ed.
- New Delhi: Anmol, 1998.
- viii, 252p..
- 1998.
81-7488-678-8
Sustainable Development-Encyclopaedias
363.700 3 / INT.20
81-7488-678-8
Sustainable Development-Encyclopaedias
363.700 3 / INT.20