Prabowo, O.S., Saroyo, P. and Ismoyowati, D. 2018. Value Chain Analysis of Organic Vegetables on Two Different Supply Chain Systems in Yogyakarta. KnE Life Sciences. 4, 2 (Mar. 2018), 154-161. DOI:https://doi.org/10.18502/kls.v4i2.1667.