河北省“粮食丰产科技工程”技术推广实践及效果分析
郑桂茹,张月辰,甄文超
Technology Extension and Effect Analysis on Science and Technology Project of
Food Production in Hebei Province
Zheng Guiru, Zhang Yuechen, Zhen Wenchao
中国农学通报
.
2006, (6): 522
-522
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DOI: 10.11924/j.issn.1000-6850.0606522
