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<br />;.~---".; <br /> <br />,-_....'.._"'., <br /> <br />""..."... <br /> <br />INVESTIGATION OF C ROOK PROBLEMS <br /> <br />THIS STUDY WAS CONDUCTED UNDER THE DIRECTION OF THE <br />OFFICE OF THE STATE ENGINEER <br /> <br />J. A. DANIELSON, P.E. <br />STA,TE ENGINEEH <br /> <br />, <br /> <br />H. D. SIMPSON, P.E. <br />j!,SSISTANT STATE ENGINEER <br />FOR ENGINEERING <br /> <br />R.L. STENZEL, P.E. <br />PROJECT ENGINEER <br />