TY - GEOGRAPHICAL RESEARCH A1 - Wang Hong T1 - STUDIES ON THE NORTH AGROCLIMATIC BOUNDARIES OF WINTER WHEAT IN LIAONING, BEIJING AND HEBEI Y1 - 1982-12-15 00:00:00.0 JF - GEOGRAPHICAL RESEARCH JO - GEOGRAPHICAL RESEARCH SP - 37 EP - 44 VL - 1 IS - 4 UR - {https://www.dlyj.ac.cn/EN/10.11821/yj1982040005} N1 - 10.11821/yj1982040005 ER -