TY  - BOOK
AU  - Worrall,Jean
AU  - Worrall,I.J.
TI  - Introduction to valence theory
SN  - 0444197079
AV  - QD469 .W67 1969
U1  - 541/.224 
PY  - 1969///
CY  - New York
PB  - American Elsevier Pub. Co.
KW  - Valence (Theoretical chemistry)
KW  - Local
ER  -