Geert Hellings books & textbook
The Cube: The Ultimate Guide to the World's Bestselling Puzzle - Secrets, Stories, Solutions
Jerry Slocum David Singmaster Wei-Hwa Huang Dieter Gebhardt Geert Hellings Erno Rubik
Black Dog & Leventhal /2009-03-11 Paperback / 142 Pages
isbn-10: 157912805X / isbn-13: 9781579128050
High Mobility and Quantum Well Transistors: Design and TCAD Simulation (Springer Series in Advanced Microelectronics, 42)
Hellings, Geert De Meyer, Kristin
Springer /2015-04-11 Paperback / 158 Pages
isbn-10: 9400795696 / isbn-13: 9789400795693
