Describir: A COMPENDIUM of information on selected low-cost building materials /

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|  \/  ||  | / \ ||  | ' //   | ||__   | |/\| ||  / //\ \\ | |  \ ||  | / \ || 
| .  . ||  | \_/ ||  | . \\   | ||__   |  /\  || |  ___  ||| |__/ ||  | \_/ || 
|_|\/|_||   \___//   |_|\_\\  |_____|| |_// \_|| |_||  |_|||_____//    \___//  
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