Connor, Frank L. <br/><br/>
Labor costs of construction;  a reference book for engineers, architects, contractors and builders /  
by Frank L. Connor. 
 - Chicago :   Gillette,  1931, c1928. 
 - xiv, 202 p.  diagrs.  21 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>CONSTRUCCION--COSTOS Y PRESUPUESTOS
<br/><br/><label>Universal Decimal Class. No.: </label>69.003