 
			民国时期河北省棉花生产及技术改进
周永萍,刘素恩,崔淑芳,刘存敬,田海燕,秦新敏,耿军义,崔瑞敏
民国时期河北省棉花生产及技术改进
Cotton Production and Technical Improvement in Hebei Province from 1910s to 1940s
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