@article{Lang Yu:29, author = {Lang Yu,Sun Quan,Shi Yunian,Luo Shixing}, title = {Study of Spread Effects of Primate City′s Propulsive Industries: Empirical Study on Beijing-Tianjin-Hebei City Cluster}, publisher = {SCIENCE & TECHNOLOGY PROGRESS AND POLICY}, year = {2022}, journal = {SCIENCE & TECHNOLOGY PROGRESS AND POLICY}, volume = {39}, number = {2}, eid = {29}, numpages = {10}, pages = {29}, keywords = {Primate City;Beijing-Tianjin-Hebei City Cluster;Propulsive Industry;Industrial Spread Effects}, url = {http://www.kjjb.org/EN/abstract/article_18771.shtml}, doi = {10.6049/kjjbydc.CZ202107031} }