I510.78
Gru
I
Gruenberger , Fred Joseph , 1918-
Introduction to electronic computers ; problem solving with the IBM 1620 (by) Fred  J. Gruenberger (and) Daniel D. McGracken. New York , J. Wiiley (1966 , c1963)
vii , 170 p. ilus. 28 cm. (A Rand Corporation research study) 
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