Hanson, J. A. <br/><br/>
Strength of structural lightweight concrete under combined -stress / by J. A. Hanson. 

 - Skokie, Illinois : atories, Development Department 
 - [12] p. 
 - Bulletin D61 / Portland Cement Association, Research and De-velopment Laboratories, Development Department .
<br/><br/> "Reprinted from the Journal of the PCA Research and Develop-ment Laboratories Vol. 5, No. 1, 39-46 (January, 1963)."