TY  - BOOK
AU  - CARTNELL,E..
AU  - FOWLES,G.W.A.
TI  - Valency and molecular structure
SN  - 0-408-70922-7
U1  - CH 541.22 
PY  - 1977///
CY  - London
PB  - ELBS, Butterworths
KW  - CHEMISTRY
ER  -