Drilling Engineering Book Needed

Dear Friends

Can anyone give the download links of these following books?

1. Drilling Engineerig Books - Dr.J.J. Azar , Dr.Robello Samuel
2. Advanced Drilling Engineering Books - Principles and Designs (Dr.Robello Samuel , Dr.Xiushan Liu)
3. Downhole Drilling Books - Theory and Practice for Students and Engineers (Dr.Robello Samuel)
4. Formulas and Calculations Books - Dr.Robello Samuel

Thanks in advance

Dear friend, I got the number 4... You can download it here
[URL="http://www.4shared.com/office/VxOyRGim/G_Robello_Samuel_-_Formulas_an.html"]http://www.4shared.com/office/VxOyRGim/G_Robello_Samuel_-_Formulas_an.html[/URL]

Regards!

Dear friend, I got the number 4... You can download it here
[URL="http://www.4shared.com/office/VxOyRGim/G_Robello_Samuel_-_Formulas_an.html"]http://www.4shared.com/office/VxOyRGim/G_Robello_Samuel_-_Formulas_an.html[/URL]

Regards!

I need the 1 by j.j.azar and robello samuels as well..... plz upload it if someone has the link