W. Lawson (1991)
survey of present practices, availability, cost, and the advantages and disadvantages of various building materials in North Eastern Nigeria. Incorporating visits to a variety of educational and government institutions and building material manufacturers in Northern Nigeria Incorporating and visits to the North East Arid Zone and several villages and other sites to assess present building practices. Samples of some typical masonry building materials were taken and their compressive strengths evaluated showing considerable variation in quality. The reasons for this are discussed and recommendations made.
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