Lession 1: INTRODUCTION1.1. SURVEYING: TRẮC ĐỊA2. Bài đọc:Surveying may be defined as the art of making measurement of the relative positions of natural and manmade features on the Earth’s surface, and the presentation of this information either graphically or numerically.Distances, angles, directions, locations, elevations, areas and volumes are thus determined from data of the survey. Also, ...