Ben shu fen " lian xi ti " he " can kao da an " liang bu fen . nei rong bao kuo : hui ji ke mu, hui ji zhang hu he jie dai fu shi ji zhang fa ; gong ye qi ye zhu yao jing ying guo cheng he suan he cheng ben ji suan deng.
Writing a summary for young readers…
For young readers
Book data: Open Library