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Development of low-cost roofing from indigenous materials in developing nations : contract no. AID/CM/ta-C-73-12 ; final report, 18 May 1973 through 31 December 1977, for Agency for Internat. Development, Dep. of State
Ball, G. L., (1978)
The ceramic Industry in the Philippines
Risley, Mary Kring, (1954)
Ceramic tile and sanitary ware makers : expanding capacities and innovating products
(1992)