TY  - BOOK
AU  - Say,M.G.
AU  - 
TI  - Direct current machines. 
U1  - 621.8/SAD 
PY  - 0000///Pitman
PY  - 1980///
CY  - Great Britain.
KW  - Machine Tools
KW  -  Machine
N1  - Includes index
ER  -