TY  - BOOK
AU  - Freeman, Peter,
AU  - Flynn, M. J.
TI  -  Software systems principles: a survey 
SN  - 0574180001 :
U1  - 001.6/42 
PY  - 1975///
CY  - Chicago
PB  - Science Research Associates
KW  - Computer programming
N1  - Includes index; Bibliography: p. [628]-652
ER  -