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Mathematics education in China today: Four problem areas

✍ Scribed by Zhu Ziqiang; Eula Ewing Monroe


Publisher
Springer
Year
1991
Tongue
English
Weight
213 KB
Volume
22
Category
Article
ISSN
0013-1954

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✍ P. Yan; G. R. Dong; Z. Z. Su; D. S. Zhang πŸ“‚ Article πŸ“… 2004 πŸ› John Wiley and Sons 🌐 English βš– 224 KB

## Abstract Desertification in the source area of Yangtze River is discussed in the paper. Under the conditions of the cold climate and permafrost, the freeze–thaw processes have significant effects on the different kinds of desertification. The classification, distribution, development, formation