TY  - BOOK
AU  - Wood Michael
AU  -  Elbra Tony
TI  - Systems design for data protection
U1  - D65,8(B)0bB288, M4 
PY  - 1984///
CY  - England
PB  - NCC Publication Press       
KW  -  Computer science irt maths
KW  - Computer science
N1  - Bibliography 135-138p
ER  -