TY  - BOOK
AU  - Hopper K Ed.
TI  - User-oriented commnd language
T2  - British computer society monographs; 2
U1  - D65,(B)2, M1 
PY  - 1981///
CY  - London
PB  - Heyden         
KW  -  Digital computer
KW  - Computer science
ER  -