TY  - BOOK
AU  - Welsh, Jim.
AU  - McKeag, Michael.
TI  - Structured system programming
T2  - Prentice-Hall International series in computer science
SN  - 0138545626
U1  - 001.642 
PY  - 1980///
CY  - New Jersey
PB  - Prentice-Hall International
ER  -