TY  - BOOK
AU  -  O'Connor, Paul R.
TI  - Teacher's guide for Chemistry : : experiments and principles  
SN  - 0669813311
U1  - 540 23
PY  - 1973///
CY  - London
PB  -  D.C. Heath, 
KW  - Chemistry
N1  - Includes index
ER  -