Building Materials, Constructi
Building material is any material which is used for a construction purpose. Many naturally occurring substances, such as clay, sand, wood and rocks, even twigs and leaves have been used to construct buildings. Apart from naturally occurring materials, many man-made products are in use, some more and some less synthetic.
Edad recomendada: 21 años
Creada por
Angelica Guadarrama García
México
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