Barney, G.C. Santos, Dos S.M.
Lift traffic analysis, design and control - Herts Peter Peregrinus 1977 - IEE control engineering series; No.2 .
0901223867
Lifts
Escalators
621.876.114 / B3
Lift traffic analysis, design and control - Herts Peter Peregrinus 1977 - IEE control engineering series; No.2 .
0901223867
Lifts
Escalators
621.876.114 / B3