Erry Prasmatiwi F, Irham I, Suryantini A, Jamhari J. Sustainability Analysis of Coffee Farming in Protected Forestof West Lampung Based on Enviromental Economic Value. PP [Internet]. 2010May1 [cited 2026Mar.30];26(1). Available from: https://www.ccrjournal.com/index.php/ccrj/article/view/117