TY - Journal of Geographical Sciences A1 - PANG Ruiming, XU Qinghai, DING Wei, ZHANG Shengrui T1 - Pollen assemblages of cultivated vegetation in central and southern Hebei Province Y1 - 2011-06-15 00:00:00.0 JF - Journal of Geographical Sciences JO - Journal of Geographical Sciences SP - 549 EP - 560 VL - 21 IS - 3 UR - {https://www.geogsci.com/EN/10.1007/s11442-011-0863-4} N1 - 10.1007/s11442-011-0863-4 ER -