Yusuf, M. and Sulaiman, J. (2013) “PRODUCTIVITY AND SOCIAL ECONOMIC CONDITIONS OF RUBBER SMALLHOLDER’S IN KABUPATEN BANYUASIN, SOUTH SUMATRA PROVINCE”, Journal of Economics, Business, and Accountancy Ventura, 15(3), pp. 403–408. doi:10.14414/jebav.v15i3.110.