Mc Graw-Hill College,Kevini Wainwright 경제수학 원서 연습문제-경제 수학 솔루션 Fndamental Methods of Mathematical Economics,줌달 9판 Zumdahl Chemistry 9th c2014 , 반응공학 - the engineering of chemical reactions, schmidt, 2nd,경제학원론 (Principles Of Economics Mankiw) 맨큐
http://blog.naver.com/ch1215kr/220105802034
http://cafe.daum.net/soho3456/IK0i/519
http://zooma.co.kr/blog/?mb_id=a0708&id=148066