TY - Biodiv Sci A1 - Li Laixin T1 - Population ecology and endangered categories evaluation of the Black-necked crane (Grus nigricollus) Y1 - 1997-05-20 JF - Biodiversity Science JO - Biodiv Sci SP - 84 EP - 89 VL - 05 IS - 2 UR - https://www.biodiversity-science.net N1 - 10.17520/biods.1997014 ER -