TY - GEOGRAPHICAL RESEARCH A1 - GUO Jun, REN Guo-yu, LI Ming-cai T1 - Variations of precipitation of different categories in the Bohai Rim area in recent 47 years Y1 - 2010-12-20 00:00:00.0 JF - GEOGRAPHICAL RESEARCH JO - GEOGRAPHICAL RESEARCH SP - 2271 EP - 2280 VL - 29 IS - 12 UR - {https://www.dlyj.ac.cn/EN/10.11821/yj2010120016} N1 - 10.11821/yj2010120016 ER -