TY  - BOOK
AU  - Ryder, R A
AU  - 
TI  - engineers' computer hand book
U1  - 681.14:62(02) 
PY  - 1980///
CY  - London
PB  - Thomas Telford
KW  - Calculating devices
KW  - Computing devices
KW  - engineers' computer hand book
KW  - computers for engineers
ER  -