Ben shu yi ying wen yuan ban de fang shi,Jie shao le guo wai you xiu de xin xi ke xue he ji shu,Gong zai you tiao jian de gao deng xue xiao zhong shi yong,Yi suo duan wo guo zai ji suan ji jiao xue shang yu guo ji xian jin shui ping de cha ju.
Writing a summary for young readers…
For young readers
Book data: Open Library