00445nam a22001217a 4500082001300000100001600013245008800029260006200117300002600179500004400205650005400249700002000303  a540bRIK  aRikza Zahid  aExtraction and Characterzation of Humic Substances from Indiginous Coal Resources /  aFaisalabad:bM.Phil ; Chemistry (2015-GCWUF-0199),c2017.  av. 84 p. :bHB; 30cm.  aInclude Index and bibliography p. 81-84  aChemistryv Characterization of Hemic Substances   aDr. Kiran Aftab