@article{canellas_façanha_2004, title={Chemical nature of soil humified fractions and their bioactivity}, volume={39}, ISSN={0100-204X}, url={https://doi.org/10.1590/S0100-204X2004000300005}, DOI={10.1590/S0100-204X2004000300005}, number={3}, journal={Pesquisa Agropecuária Brasileira}, publisher={Embrapa Secretaria de Pesquisa e Desenvolvimento; Pesquisa Agropecuária Brasileira}, author={Canellas, Luciano Pasqualoto and Façanha, Arnoldo Rocha}, year={2004}, month={Mar}, pages={233–240} }