Cooperation Model of “Tampan”(dividing Profit Based on the Agreement) and “Ounce” (cooperation Model Based on the Ounce Scale in the Coconut Sugar Production: The Study of Coconut Sugar Produsen in Karang BendoVillage Ponggok District Blitar Regency. josar 2019, 4 (1), 72-83. https://doi.org/10.35457/josar.v4i1.749.