@article{XU Yue qing_339, author = {XU Yue qing, LI Xiu bin}, title = {Grey dynamic analysis of grain production in Hebei Province}, publisher = {GEOGRAPHICAL RESEARCH}, year = {2002}, journal = {GEOGRAPHICAL RESEARCH}, volume = {21}, number = {3}, eid = {339}, pages = {339-346}, keywords = {

Hebei Province;grain production;grey analysis

}, doi = https://www.dlyj.ac.cn/EN/10.11821/yj2002030009 }