INFORMATION AND INSTRUCTIONS FOR USE OF AIR-ENTRAINING ADMIXTURES IN CONCRETE 

 - United States Department of the Interior, Bureau of Reclamation.  United States  1946 
 - 9p.  ILL.,Cht.,Fig and Table 
 - Technical Concrete Control Section Report No.   C-307 .
<br/><br/><label>Nat. Bib. No.: </label>169 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Chemical Engineering
<br/><br/><label>Universal Decimal Class. No.: </label>666.97  / INF