TY  - BOOK
AU  - Pohl,Ira
AU  - Shaw,Alan
TI  - The nature of computation: an introduction to computer science 
SN  - 0914894129
PY  - 1981///
CY  - London
PB  - Computer Science Press
KW  - Electronic data processing
N1  - Includes index; Includes bibliographical references
ER  -