Military Observation Balloons (Captive and Free) Emil J. Widmer E-Book (epub)

Repatriation as an essential part of intercultural training in the context of intercultural management A. Tucholka, A. Blöchlinger, J. Widmer E-Book (epub)

Digital Systems, Global Edition Ronald J. Tocci, Neal S. Widmer, Greg Moss E-Book (pdf)