00399nam a22001337a 4500 20260206101052.0 260206b |||||||| |||| 00| 0 eng d 067508301X Unger E.A & Ahmed Nasir Computer Science Fundamentals /Nasir Ahmed United States of America; Bell & Howell Company; 1979. xii, 387p. ill; 26cm. ddc BK 0 145 145