00904cam a22002531  4500001001300000003000400013005001700017008004100034010001700075035001900092040004100111042001200152050002200164051002400186100005100210245013800261260004200399300004600441490004100487504002900528650002100557700005500578999001700633gs 13000362 DLC20260227111314.0790411s1913    xx            000 0 eng c  ags 13000362   a(OCoLC)4844399  aLibrary, U.S. Geol. surveycOCldDLC  apremarc00aQE75b.B9 no. 522  aTN945b.E3cCopy 2.1 aEckel, Edwin C.q(Edwin Clarence),d1875-1941.00aPortland cement materials and industry in the United States,cby Edwin C, Eckel, with contributions by Ernest F. Burchard and others.  aWashington,bGovt. print off.,c1913.  a401 p.bmaps (part fold.) diagrs.c24 cm.0 aU.S. Geological survey. Bulletin 522  aContains bibliographies. 0aPortland cement.1 aBurchard, Ernest F.q(Ernest Francis),d1875-1961.  c25252d25252