Eco-regional approaches for sustainable land use and food production: proceedings of a symposium on eco-regional approaches in agricultural research, 12-16 December 1994, ISNAR, The Hague.,1995, 引用: 0
Conservation agriculture, a worldwide challenge. First World Congress on conservation agriculture, Madrid, Spain, 1-5 October, 2001. Volume 1: keynote contributions.,2003, 引用: 7