Grengia, E. M. (1979). Soil-cement: Its structural characteristics and suitability as a low-cost housing material [microform]. Photoduplication Service. University of the Philippines Library.
Dyfyniad Arddull ChicagoGrengia, Epifanio M. Soil-cement: Its Structural Characteristics and Suitability as a Low-cost Housing Material [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1979.
Dyfyniad MLAGrengia, Epifanio M. Soil-cement: Its Structural Characteristics and Suitability as a Low-cost Housing Material [microform]. Photoduplication Service. University of the Philippines Library, 1979.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.