Pujiyanto, P. (2009). Granules Composed of Cocoa Pod Husk Enriched with Minerals and Their Effects on Growth of Coffee and Cocoa Seedlings. Pelita Perkebunan (a Coffee and Cocoa Research Journal), 25(3). https://doi.org/10.22302/iccri.jur.pelitaperkebunan.v25i3.112