Spread the loveNever have I seen such a mess in life. The air is pure but wearing a mask is mandatory. Roads are empty but it is impossible to go on long drive. People have […]
Spread the love1) Dolomite bricks are 2) Closing error of a closed traverse in theodolite survey is 3) The smaller horizontal angle between the true meridian and a surveyline, is known as 4) Permanent hardness […]