Pressler, E. E. <br/><br/>
Investigation of the Franke Method of determining free calc-ium hydroxide and free calcium oxide / by E. E. Pressler, S-tephen Brunauer and D. L. Kantro. 

 - Chicago : atories 
 - 21 p. 
 - Bulletin 62 / Portland Cement Association .
<br/><br/> "Authorized reprint from Analytical Chemistry Vol. 28, p. 8-96, May, 1956".