Taghavi, Dariush, Ajali, Jalil, Valadyani, Ali Reza, fatahi, Iraj (2007) ‘Evaluation of energy efficiency in dry farming of Barley (Hordeum vulgar L.) field in Azarbayejan-e-Sharqi province, Iran’, Agroecology Journal, 3(2), pp. 41-49. doi: