Quantitative determination of the four major phases of port-land cement by combined X-Ray and chemical analysis / by L.- E. Copeland ... [et al]. 

 - SKokie, Illinois : atories 
 - 22 p. 
 - Bulletin 108 / Portland Cement Association .
<br/><br/> "Authorized reprint form Analytical Chemistry vol. 31, p. 1-521, september 1959".