sari, N., Widyastuti, R. and Abdoellah, S. 2021. Diversity and Abundance of Earthworms in Cocoa Plantations with Different Shade Trees. Pelita Perkebunan (a Coffee and Cocoa Research Journal). 37, 3 (Dec. 2021), 207-218. DOI:https://doi.org/10.22302/iccri.jur.pelitaperkebunan.v37i3.483.