TY  - BOOK
AU  - Calladine, Chris.R.
TI  - Understanding DNA: the molecule and how it works 
SN  - 0121550893
U1  - 574.873282 
PY  - 2004///
CY  - London
PB  - Elsevier
KW  - Science
N1  - Includes bibliographical references
ER  -