TY  - BOOK
AU  - Chang,Raymond
TI  - General chemistry: the essential concepts 
SN  - 0073311855
AV  - QD 33 C456g 2008
U1  - 540 
PY  - 2008///
CY  - New York
PB  - McGraw-Hill
KW  - Chemistry
KW  - Química
N1  - Includes index; Intended for use by students in a one-year general chemistry course
ER  -