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			To Raise the Rate of Time and Space Utilization of Agricultural Resources and Ensure the Self-sufficiency in Grain in the Coming Century
Science & Technology Review ›› 1999, Vol. 17 ›› Issue (9901) : 14-15.
						
							PDF(192 KB) 
						
						
					
						
							PDF(192 KB) 
						
						
					To Raise the Rate of Time and Space Utilization of Agricultural Resources and Ensure the Self-sufficiency in Grain in the Coming Century
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