Frases en ingles para peurtorriquenos : tafie no. P-22. D.A.Pam. 20-601 / Prep. by the office of armed forces information and education, dep. of defenses Magnetic declination in California and Nevada : 1935 special publication First-order triangulation in Texas (1927 datum) / H.C. Mitchell special publication Leveling in North Carolina / N.F. Braaten, C.E. McCombs Report of the U.S. Interdepartmental Social Hygiene Board for the fiscal year ended june 30 1921 special publication First-order triangulation and traverse in Louisiana (1927 datum) / O.P. Sutherland special publication First- and second-order triangulation in Tennessee (1927 datum) / H.P. Kaufman war department technical manual Railway operating battalion : technical manual / prepared under direction of the Chief of Engineers war department technical manual Topography and surveying map reproduction in the field / War Department naval historical foundation publication ; series ii history of the Dudley Knox center for naval history / William James Morgan, Joye L. Leonhart war department manual Unexploded bombs : organization and operation for disposal : ordnance Guide to U.S. Army museums and historic sites / comp. by Norman Miller Cary Jr.