TY  - BOOK
AU  - Hehner, Eric C. R
TI  - A practical theory of programming
SN  - 387941061
U1  - 005.1 HEH 
PY  - 1993///
CY  - Berlin
PB  - Springer-Verlag
KW  - Computer programming
N1  - Includes bibliographical references (p. 215-218) and index
ER  -