TY  - GEN
AU  - Grafstein, Paul.             
AU  - Schwarz,Otto B.
TI  - Pictorial handbook of technical devices
U1  - 604.26218 
PY  - 1971///
CY  - New York
PB  - Chemical Pub. Co.,1971.
KW  - Machinery
KW  - Drawings
KW  - Mechanical movements
KW  - Drawing
N1  - includes index; Distributer: Al-Ahram; Catalogued by: Sara
ER  -