@book{226990,
	author = {Ladha, Jagdish K. and Hill, James e.},
	title = {Improving the productivity and sustainability of rice-wheat systems: issues and impacts: J.K. Ladha, J.E. Hill, R.J. Buresh, J.M.Duxbury and R.K. Gupta (Eds).},
	publisher = {Soil Science Society of America; American Society of Agronomy; Crop Science Society of America},
	year = {2003},
	address = {Madison},
	note = {La mejora de la productividad y la sostenibilidad de los sistemas de arroz-trigo de las llanuras del Indo-Ganges: una síntesis de los SNIA-IRRI asociación de investigación.}
}