Ul-Allah, S. (2013). Towards a water and nutrient efficient forage production in semi-arid regions of Pakistan. kassel university press GmbH.
Chicago-viite (17. p.)Ul-Allah, Sami. Towards a Water and Nutrient Efficient Forage Production in Semi-arid Regions of Pakistan. Kassel, Germany: kassel university press GmbH, 2013.
MLA-viite (9. p.)Ul-Allah, Sami. Towards a Water and Nutrient Efficient Forage Production in Semi-arid Regions of Pakistan. kassel university press GmbH, 2013.
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