![Dr. Hans-Jürgen John Dr. Hans-Jürgen John](/sites/default/files/styles/ct_person_default_image/public/persons/picture-1408-1311175000_1.jpg?itok=2auG1_1m)
All previous conference papers from
Dr. Hans-Jürgen John
Title | Conference year |
---|---|
Method Comparsion Between Horizontal Directional Drilling, Microtunneling, Shields with Partical Face Extraction and Easy Pipe | Pipeline Technology Conference 2007 |