APA

Bünstorf J., .The problems of arable farming in marginal sub-tropical regions of variable rainfall : The arable farming region of the argentinian Gran Chaco. : .

Chicago

Bünstorf Jurgen, .The problems of arable farming in marginal sub-tropical regions of variable rainfall : The arable farming region of the argentinian Gran Chaco. : .

Harvard

Bünstorf J., .The problems of arable farming in marginal sub-tropical regions of variable rainfall : The arable farming region of the argentinian Gran Chaco. : .

MLA

Bünstorf Jurgen, .: . .