کتاب های Helmi Youssef
Machining technology: machine tools and operations
Helmi A. Youssef, Hassan El-Hofy, 2008
Machining Technology: Machine Tools and Operations
Helmi A. Youssef, Hassan El-Hofy, 2008
Machining of stainless steels and super alloys: traditional and nontraditional techniques
Youssef, Helmi A, 2015
Non-Traditional and Advanced Machining Technologies: Machine Tools and Operations
Helmi Youssef, Hassan El-Hofy, 2020
Machining Technology and Operations
Helmi Youssef, Hassan El-Hofy, 2020
