TY  - BOOK
AU  - Leeson, Daniel N.
TI  - Basic programming concepts and the IBM 1620 computer
U1  - GC 004 L495 1962 
PY  - 1962///
CY  - New York, N.Y.
PB  - Hol, Rinehart and Winston
KW  - Computers
N1  - Includes index
ER  -