00865cam a22002291  4500001001300000003000400013005001700017008004100034010001700075035001900092040004100111042001200152050002000164110003100184245017000215260004300385300007300428490005900501650001900560700003900579999001700618es 20000001 DLC20260227111236.0800506s1919    dcuabef      f000 0 eng c  aes 20000001   a(OCoLC)6287280  aU.S. Engineer School Libr.cOCldDLC  apremarc00aUG1b.U5 no. 582 aU.S. Army Engineer School.00aPamphlet on the evolution of the art of fortification.cPrepared under the personal direction of Major General William M. Black, chief of engineers, U.S. army. 1919.  aWashington,bGovt. print. off.,c1919.  a107 p.bXXVIII pl. (incl. fold. map) plans (1 fold.) diagrs.c23 cm.0 aOccasional papers, Engineer school, U.S. army,vno. 58 0aFortification.1 aBlack, William Murray,d1855-1933.  c22314d22314