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<br /> <br />~---/ <br /> <br />. <br /> <br />e <br /> <br />'. <br /> <br />-~ <br />?~ <br />.' <br /> <br />IMPROVED INLETS FOR HIGHWAY CULVERTS <br /> <br />November, 1972 <br /> <br />Hydraulics Branch <br /> <br />Bridge Division <br /> <br />. <br /> <br />Office of Engineering <br /> <br />Federal Highway Administration <br /> <br />Washington, D.C. <br /> <br />", <br /> <br /> <br />. <br />