TY  - BOOK
AU  - Staff of the computation laboratory
ED  - Staff of the computation laboratory
TI  - Description of a magnetic drum calculator
T2  - Annals of the computation laboratory of Harvard University; 25
U1  - MB1, J21 
PY  - 1952///
CY  - Cambridge
PB  - Harvard university press     
KW  - INDUSTRIAL ARTS
ER  -