Studien und Forschungen ueber den Einfluss des Propellers auf den Wirkungsgrad der Propulsion
Optimum hazard index formula for railroad crossing protection for Lincoln, Nebraska
Changes in industrial structure of the Ruhr and effects on transportation systems
Containment vessel with circumferential crane runway of unusual design
Interplanetary trajectories for space vehicles with low-thrust acceleration
Interplanetary trajectories for space vehicles with low-thrust acceleration
Simple and articulated pendulum suspension of axle boxes for railway vehicles
Investigation of system for switching of cars in intermediate stations