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		Journal of The Korean Society of Grassland and Forage Science :: Vol.33 No.4 pp.281-289 DOI:https://doi.org/10.5333/KGFS.2013.33.4.281 Open abstract    
Journal of The Korean Society of Grassland and Forage Science :: Vol.33 No.4 pp.281-289
			DOI:https://doi.org/10.5333/KGFS.2013.33.4.281
			 
			