বাংলা (bn) | Change Language (Change Language)
  1. 1/01/1983 This booklet is a manual on masonry well construction, written for the layman with little or no technical training. 50 pages, illustrated
  2. 1/01/1964 Department of Economic and Social Affairs, United Nations 87 pages, illustrated, photos, plus tables of figures
  3. 1/01/1955 144 pages, illustrated, photos