Prastowo, E. and Arimarsetiowati, R. (2019) “Morphological Variations of Robusta Coffee As a Response to Different Altitude in Lampung”, Pelita Perkebunan (a Coffee and Cocoa Research Journal), 35(2), pp. 103-118. doi: 10.22302/iccri.jur.pelitaperkebunan.v35i2.378.