[GRASS5] Ebooks "Open source GIS: GRASS GIS Approach"

Hi all,
Can any one give me ebook "Oen source GIS: a GRASS-GIS Approach". The reason is from my country I can't buy this book.
Thanks so much.
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Khuong Truong Giang,
Research and Application Division,
HCM Department of Post and Telematic
59 Ly Tu Trong, distric 1, HCM city, VietNam
Mobil: 0908303605