PIPELINES ARE CONTINUALLY INSPECTED FOR LEAKS AND FOR DAMAGE CAUS...

333. - LUYEN THI TOIEC 870 CAU TRAC NGHIEM
LUYEN THI TOIEC 870 CAU TRAC NGHIEM
333. Pipelines are continually inspected for leaks and for damage caused by such conditions as freezing A B temperatures, heavy rain, and soil erode. C D