Planter and peasant : colonial policy and the agrarian struggle in East Sumatra, 1863-1947 / [by] Karl J. PelzerPlanters against peasants : the agrarian struggle in East Sumatra 1947-1958 / Karl J. Pelzer ; [introd. Clifford Geertz]Planter and peasant : colonial policy and the agrarian struggle in East Sumatra, 1863-1947 / [by] Karl J. PelzerPlanters against peasants : the agrarian struggle in East Sumatra 1947-1958 / Karl J. Pelzer ; [introd. Clifford Geertz]