hi, i am a chinese student. i am in USA now. i need a book called essentials of economics right now because books here are really expensive. i searched for the book and i founded in here. but i can't download it because i need more money of the bbs. is there someone who has the book can send the PDF form to my e-mail? alex920414@yahoo.com.cn... i will  really appreaciate it. sorry i can't use chinese because i am in the libarary of the school. my QQ is 892535605. Thx!!!