黑龙江省熊类年龄构成、性比及繁殖情况的初步研究

刘相文, 萧前柱

AGE COMPOSITION,SEX RATIO AND REPRODUCTION OF BEARS IN HEILONGJIANG PROVINCE, CHINA

LIU Xiangwen, XIAO Qianzhu

. 1986, (3): 161 -170 .