Anandyawati, ., Sumarsih, E., Nugroho, B. and Widyastuti, R. (2017) “Study of Root Exudate Organic Acids and Microbial Population in the Rhizosphere of Oil Palm Seedling”, JOURNAL OF TROPICAL SOILS, 22(1), pp. 29–36. doi: 10.5400/jts.2017.v22i1.29-36.