ف احياناً يكون الغرض هو اكتشاف ذهب خام او ذهب قديم و ذلك وفق معرفة مسبقة He then utilised his possess previously discovery, the partly overlapping two-coil induction harmony, plus the detection variety amplified to five inches (twelve centimeters). Though the try was nevertheless unsuccessful since the metallic coil spring https://kateg554ylw8.wikigop.com/user