The manufacture and utilization of Portland cement :  report of the Interregional Seminar held at Holte, Denmark, 7-20 May 1972, including a summary of lectures presented to the Seminar. 

 - New York :  United Nations,  1972. 
 - United Nations. [Document] ID/97 (ID/WG.125/8/Rev. 1) .
 - Document (United Nations) ;  ID/97 [etc.] .
<br/><br/> At head of title: United Nations Industrial Development Organization, Vienna.  "United Nations publication. Sales no.: E.72.II.B.32."  Organized by the United Nations industrial development organization and the Danish international development agency. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Portland cement -- Congresses.--Portland cement -- Congresses.