Jalota, Rajesh K., Sangha, Kamaljit K., and Kehal, Harbhajan Singh (2005) Sustainable development: state of agriculture and natural resources in Punjab. In: Arkora, Guljit K., and Talwar, Arunabh, (eds.) Sustainable Development: an interdisciplinary perspective. Research & Publishing House, New Delhi, India, pp. 223-235.