1. An introduction and questions to which answers are sought;Jackson;ACI J. Proc.,1944
2. Air-entraining admixtures;Dolch,1996
3. A working hypothesis for further studies of frost resistance of concrete;Powers;ACI J. Proc.,1945
4. The air requirement of frost-resistant concrete, proceedings;Powers;Highw. Res. Board.,1949
5. Air entrainment in cement and silica pastes;Bruere;ACI J. Proc.,1955