Describir: Surveying for building construction, prep. especially for home study

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| || | ||  |  ___||  / ____||  /_   _// | || | ||  \ \\/ //  /  ___|| 
| '--' ||  | ||__   / //---`'   -| ||-  | '--' ||   \ ` //  | // __   
| .--. ||  | ||__   \ \\___     _| ||_  | .--. ||    | ||   | \\_\ || 
|_|| |_||  |_____||  \_____||  /_____// |_|| |_||    |_||    \____//  
`-`  `-`   `-----`    `----`   `-----`  `-`  `-`     `-`'     `---`   
                                                                      
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