Copeland, L. E. <br/><br/>
Self desiccation in portland cement pastes / by L. E. Copel-and and R. H. Bragg. 

 - Chicago : atories 
 - 15 p. 
 - Bulletin 52 / Portland Cement Association .
<br/><br/> "Authorized reprint from the copyrighted ASTM Bulletin No. - 204, february, 1955".