US Navy engineering aid courses torrent

Three volumes of US Navy training courses, covering the basics of civil engineering, such as drafting, soils, frame structures, surveying, construction, etc.

NOTE: the numbers in the titles, such as \"Engineering Aid 3\" refer to the skill grade, so 3 means \"third-class\" and 1 means \"first class\". This means that the most advanced material is in \"Engineering Aid 1\".