TY - Biodiv Sci A1 - Yang Limin, Han Mei, Li Jiandong T1 - Study on sampling intensity of species diversity of grassland community in the Songnen Plain of China Y1 - 1997-08-20 JF - Biodiversity Science JO - Biodiv Sci SP - 168 EP - 172 VL - 05 IS - 3 UR - https://www.biodiversity-science.net N1 - 10.17520/biods.1997027 ER -