Gonnerman, H.F. <br/><br/>
Air entrainment in concrete 

 - American Concrete Institute  Michigan  1947 
 - 568p.  fig. 
<br/><br/><label>Nat. Bib. No.: </label>185 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Universal Decimal Class. No.: </label>666.9  / GON