93 صفحه pdf
API Vocational Training Book-2:1990
Corrosion of oil and gas well equipment
ویرایش دوم
API VT-2:1990-Corrosion of oil and gas well equipment
93 صفحه pdf
API Vocational Training Book-2:1990
Corrosion of oil and gas well equipment
ویرایش دوم