id	keyword
issue-257	land ownership
issue-257	development
issue-257	relations
issue-257	property
issue-257	economic
issue-257	production
issue-257	ownership relations
issue-257	property relations
issue-257	forms
issue-257	land relations
issue-257	system
issue-257	labour
issue-257	capitalist
issue-257	contradictions
issue-257	land property
issue-257	use