| 1. |  | LADHA, J. K.; HILL, J. E.; DUXBURY, J. M.; GUPTA, R. K.; BURESH, R. J. (ed.). Improving the productivity and sustainability of rice-wheat systems: issues and impacts. Madison: ASA: CSSA: SSSA, 2003. 231 p. (ASA. Special Publication, 65). Proceedings of an international symposium cosponsored by Division A-6 (International Agronomy), the International Rice Research Institute (IRRI), and Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), held at the 2001 Annual...| Biblioteca(s): Embrapa Arroz e Feijão. |
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