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thank you very much!

better a notebook servers to China,there are at least 600.000.000 people in internet.

many kinds of Python books in China bookstore,but no many people deeply study it.

in China,many people use mathematica,because mathematica 9.01 and maple 17 is free download every where

magma 2.15 free download in China.

in China nobody and no college pay magma V2.20,if pay one times,magma V2.20 will be free downloaded all China

in China,95/100 windows OS are free downloaded,no pay a cent to Bill_gate