John Howard Cromwell
I. Sh Beĭlin
Cselényi, József.
A. O. Spivakovskiĭ
F. A. Makhlis
Spivakovskiĭ, A. O.
L. G. Shakhmeĭster
D. V. Subba Rao
Reinhard H. Whohlbier
Conveyor Equipment Manufacturers Association. Engineering Conference.
United States International Trade Commission
Conveyor Equipment Manufacturers Association. Engineering Conference
V. T. Polunin
M. J. Sapko
V. S. Volotkovskiĭ
E. E. Novikov
Bogusław Karolewski
Unknown Author
R. Todd Swinderman
V. I. Li͡amin