Citation | Khan, R.U., A. Khan, M.Z. Khan, F. Hussain, Z. Islam and M.A. Hameed. 2021. Instrumental characterization of crop residues and coal derived humic substances and their impact on soil organic matter. Pakistan Journal of Agricultural Research, 34(2): 472-478.
DOI | http://dx.doi.org/10.17582/journal.pjar/2021/34.2.472.478