1[1]Regmi ,D. D. and Weber,K. E. (1996). Sustainable agricultural development for small farmers in Nepal:Myth or reality? Outlook on Agriculture 25:89-94.
2[2]Wen, D. Z. and David, P. (1992). Ecological resource management to achieve a productive, sustainable agricultural systems in Northeast China.Agriculture Ecosystems and Environment 41:215 - 330.
3[3]Tisdell, C. ( 1996 ). Economic indicators to assess the sustainability of conservation farming projects :an evaluation. Agriculture,ecosystems and environment. Vol. ,57 ,pp. 117 - 131.
4[4]Jules, N. P. ( 1995 ). Regenerating agriculture: Policies and practice for sustainability and self - reliance. Earthscan Publications Ltd, London.
5[5]David C. White, John B. Braden, and Robert H. Hornbaker (1994). Economics of sustainable agriculture. in" Sustainable agricultural systems" edited by J. L. Hatfield, D. L. Karlen. LEWIS PUBLISHERS.
6[6]FAO. (1995). Sustainable issues in agricultural and rural development policies. Vol. 2. Trainers' Kit. FAO International Book Distributing CO. 1995.
7[7]Gardener, B. D. and Y. Zhao. (1999). "Are there ways to enhance China' s food security?" CHOICES. First Quarter. 18 - 24. 1999.
8[8]Xie,J. C. ( 1998 ). Current use of and requirement for nutrients for sustainable food production in China. CAB INTERNATIONAL 1998. Nutrient management for sustainable crop production in Asia.
9[9]Agricultural Information Network of China. (2000). Sustainable development in China. [ On - line ] Available :www. agro. gov. cn
10[10]Li, R. X. (1990). The goals and countermeasures for developing grain food production in Guizhou. Proceedings of grain food problems and countermeasures research in Guizhou. Cropping systems and cultivation. 1990.
