306с

DIRECT CURRENT

4$i

MACHINES

FOR

CONTROL SYSTEMS

2 /-?

by

A. TUSTIN

M.Sc, M.I.E.E.

A*

SKCriei»«^! HayMHO-Hcc/ieÄ. mh-t 3 H

1952

E. & F. N. SPON LTD. 22 Henrietta Street, London, W.C.s