1000-7857
1991 Issue 4
On the Union of Natural Scientists and Social Scientists
xing run chuan ; zhao wan li ;
xing run chuan ; zhao wan li ;
..............page:3-6
..............page:6
..............page:7-12
..............page:13-17
yan zhi jin shu qing qu de jin zhan bu ke kao
wang jing ;
wang jing ;
..............page:17
Development of Suburban Economy
bao yong jiang ;
bao yong jiang ;
..............page:18-21+30
..............page:22-25
..............page:26-30
Today and the Future: Population and Grain in China
feng zhi ming ; chen bai ming ; wang li xin ;
feng zhi ming ; chen bai ming ; wang li xin ;
..............page:31-34
Regional Equlibrium for Supply and Demand in Grain in China
li wen juan ; zhu zhong yu ;
li wen juan ; zhu zhong yu ;
..............page:35-38
Ten Years of Brain Research
wang shu rong ;
wang shu rong ;
..............page:39-41+12
Research on Earthquake Seismic Tomography
liu jian hua ; wu hua ;
liu jian hua ; wu hua ;
..............page:42-44
The Urgency of Scientific Breeding of Giant Panda
chen da yuan ;
chen da yuan ;
..............page:45-46
Exploitation of the Huanghe River Beiganliu
luo xi bei ;
luo xi bei ;
..............page:47-50
ri ben yan zhi chu 64 zhao wei chao ji xin pian
wang jing ;
wang jing ;
..............page:50
Daliushu Pivotal project on the Huanghe River
zhang cun ji ;
zhang cun ji ;
..............page:51-54
Land Desertification in North China
zhu zhen da ; wang tao ;
zhu zhen da ; wang tao ;
..............page:55-57+46
Lessen Disasters and Improve Investment Environment
gao jian guo ;
gao jian guo ;
..............page:58-60
Standardization System of Disaster Measurement
xu hao min ;
xu hao min ;
..............page:61-63
wo guo shou ci sheng chan gao chun san shi wan chun jing ti
wang jin shan ;
wang jin shan ;
..............page:63
yi da li ke ji ti xi de diao zheng
li zuo ;
li zuo ;
..............page:64