TY  - BOOK
AU  - Hellerman,Herbert
TI  - Digital computer system principles
U1  - 510.7834 
PY  - 1967///
CY  - New York
PB  - McGraw-Hill
KW  - Electronic digital computers
KW  - Automatic control
KW  - Computer programs
KW  - Programming languages (Electronic computers)
N1  - Includes bibliographical references and index
ER  -