1.
|
Soil organic matter regulating greenhouse gases in tropical and subtropical environments: a comparison between integrated crop-livestock and annual cropping systems. BAYER, C. - DIECKOW, J. - ZANATTA, J. A.
|
2.
|
Organic matter of the anthropogenic dark earths of Amazonia. MADARI, B. E. - CUNHA, T. J. F. - SOARES, R.
|