Djajakirana G. Direct and Indirect Methods of Soil Microbial-Biomass Determination: Weakness and Strength. J. Il. Tan. Lingk. [Internet]. 2003Apr.1 [cited 2024Apr.20];5(1):29-8. Available from: https://journal.ipb.ac.id/index.php/jtanah/article/view/2331