TY - PROGRESS IN GEOGRAPHY A1 - HAO Zhi xin, ZHENG Jing yun, TAO Xiang xin T1 - A Study on Northern Boundary of Winter Wheat during Climate Warming: A Case Study in Liaoning Province Y1 - 2001-08-24 00:00:00.0 JF - PROGRESS IN GEOGRAPHY JO - PROGRESS IN GEOGRAPHY SP - 254 EP - 261 VL - 20 IS - 3 UR - {https://www.progressingeography.com/EN/10.11820/dlkxjz.2001.03.008} N1 - 10.11820/dlkxjz.2001.03.008 ER -