TY  - BOOK
AU  - Crook,E.M.
ED  - Biochemical Society Symposium 
TI  - The structure of nucleic acids and their role in protein synthesis: Biochemical Society Symposium No. 14 held at the London School of hygiene and tropical medicine on 18 February 1956 
PY  - 1957///
CY  - Cambridge : 
PB  - University press, 
ER  -