TY  - BOOK
AU  - Sambrook J
AU  -  Fritsch E F
AU  -  Maniatis T
TI  - Molecular cloning :  A laboratory manual.3V.     
U1  - G9M:68:f3, M9.1-.3 
PY  - 1989///
CY  - New York  
PB  -  Cold Spring Harbor Laboratory Press  
ER  -