Astiti, I. A. P. .; Winarno, J.; Rusdiyana, E. . Empowering Farmer Group to Increase Food Security (Case Study of Tandur Tukul Urban Farming Farmer Group in Joyosuran-Pasar Kliwon, Surakarta. j.sos.ekon.pertan. 2021, 17, 11-22.