TY  - BOOK
AU  - B, Stevens
TI  - Atomic Structure and Valency
U1  - 535.84 
PY  - 1978///
CY  - Madras Bn 1647
PB  - Philip Allan
KW  - General Stack
KW  - Physics
KW  - Natural Science
KW  - Light & infrared & ultraviolet phenomenaChemistry
ER  -