Kuenning, William H. <br/><br/>
Effect of variations in curing and drying on the physical p-roperties of concrete masonry units / by William H. Kuennin-g and C. C. Carlson. 

 - Skokie, Illinois : ies, Development Department 
 - 129 p. 
 - Bulletin D13 / Portland Cement Association, Research and De-velopment Laboratories, Development Department .