@inproceedings{paperid:1011364, author = {Khodabakhshian, Rasool and Shakeri, Mohsen and Baradaran Motie, Jalal}, title = {Preventive maintenan//ce in agricultural machinery}, booktitle = {synergy & technical development}, year = {2009}, location = {بوداپست}, keywords = {رKeywords: agricultural machine; down time; efficiency; preventive maintenance}, }