TY  - BOOK
AU  - Sadlej,Joanna  .
AU  - Cooper,Ian L..
TI  - Semi-empirical methods of quantum chemistry / 
SN  - 0853121672
U1  - 541.28 
PY  - 1977///
CY  - New York : 
PB  - Ellis Horwood , 
KW  - QUANTUM CHEMISTRY
N1  - Includes index
ER  -